JPH076486Y2 - Instrument mounting base - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an improved technique of a measuring instrument mounting base used for installing various measuring instruments such as a radiation thermometer on a mounting portion.

[Conventional technology]

In the above-mentioned measuring instrument mounting base, regardless of the positional relationship between the attached part of the measuring instrument and the measurement target in each device, the direction of the measuring instrument can be freely adjusted in the vertical and horizontal directions with respect to the attached part. It is necessary to configure so that it can be aimed at the measured object.

FIG. 17 shows an example of a measuring instrument mounting base that can satisfy such demands.

In this product, two measuring instrument mounting holes i and j with bolts 12 are formed in the vertical surface portion E of the L-shaped mounting member 11, and the mounting member with the bolts 13 is fastened to the horizontal surface F. It is formed by forming individual mounting holes m and n, and one of the two mounting holes is a hole for inserting a circular bolt.
i, m, and the other mounting hole is a circular arc elongated hole j, n around the bolt insertion holes i, m.

According to the above configuration, within the range of the circular arc long hole j around the one bolt 12 that connects the measuring instrument 14 to the fitting 11,
A change in the angle of elevation of the measuring instrument 14 relative to the mounting bracket 11 has been achieved.
Within the range of the circular arc long hole n around one bolt 13 connected to 15, the lateral change of the angle of the measuring instrument 14 with respect to the attached portion 15 is achieved.

[Problems to be solved by the device]

However, since the angle change width of the measuring instrument 14 in the depression / elevation direction and the left / right direction is limited within the range of each one arcuate slot j, n, the arc length of the arcuate slot j, n. In order not to increase the size or to reduce the dimension from the center of the bolt insertion hole i, m to the center line in the longitudinal direction of the arcuate slot j, m, the angle change width is increased. Cannot be taken, and if the arc length is increased, the mounting bracket
There is a problem in that if the size of 11 becomes large or the center-to-center dimension is made small, the mounting strength of the measuring device is reduced and the mounting posture of the measuring device becomes unstable.

Also, from the viewpoint of the mounting space, the mounting bracket 11
In the case where the measuring instrument 14 has to be mounted on the opposite side, depending on the positional relationship of the mounting holes i and j formed in the vertical surface portion E, the angle changing range of the measuring instrument 14 in the depression / elevation direction is one of the above. There was a case where it changed around the bolt 12 and the measuring instrument 14 could not be attached at a desired angle.

The present invention has been made in view of the above situation,
An object of the present invention is to provide a mounting base for a measuring instrument that can solve the above inconveniences all at once without increasing the size and lowering the mounting strength of the measuring instrument.

[Means for Solving the Problems]

The mounting base of the measuring instrument according to the first aspect of the present invention, which has achieved the above object, has two surface portions which are orthogonal to each other.
It is composed of a plurality of mounting brackets and a bolt connecting the two mounting brackets, and the two mounting brackets are provided with two arc-shaped long holes in one surface portion in a state of being plane-symmetrical to each other. And three bolt insertion holes are formed on the other surface portion, and the two arc-shaped long holes have two points on the same axis line at the center of the end hole of the arc-shaped long hole and the arc-shaped long hole on the other side. With respect to the center of the circular arc long hole, the longitudinal center lines of the circular arc elongated holes are formed so as to be offset to one side with respect to the same axis line so that the center lines of the circular arc elongated holes pass through the centers of the opposite circular arc elongated holes. The feature is that the bolt hole centers are formed to coincide with the center of the end hole on the same axis and the center of the other end hole of one of the arc-shaped elongated holes.

The mounting base of the measuring instrument according to the second aspect of the present invention also comprises two mounting brackets having two surface portions orthogonal to each other and a bolt connecting the mounting brackets.
Two arc-shaped holes are formed in the connected surface of one mounting member, four bolt insertion holes are formed in the connected surface of the other mounting member, and the remaining surface of each mounting member is further formed. A mounting hole for a bolt for fastening a measuring instrument is formed on one side, and a mounting hole for a bolt for fastening a metal fitting to a mounted portion is formed on the other surface of the remaining surface portion.
Each arc-shaped long hole has two points on the same axis as the center of the end hole of the arc-shaped long hole and the center of the opposite arc-shaped long hole. The bolt insertion hole is formed so as to deviate to one side with respect to the same axis line so as to pass through the center of the elongated hole, and the bolt insertion hole has the bolt hole center aligned with the end hole center of each of the two arc-shaped elongated holes. It is characterized in that at least one bolt attachment hole for fastening the measuring instrument or for fastening the metal fitting is structurally formed to be the same as the two arc-shaped long holes.

[Action]

According to the characteristic configuration of the first invention, as will be apparent from the description of the embodiment, within the range of the second circular arc elongated hole around the first bolt connecting the two mounting brackets. By rotating the mounting bracket on the measuring instrument mounting side, an angle change in the elevation angle direction of the measuring instrument with respect to the mounted portion is achieved, and the end of the second arc-shaped elongated hole abuts the second bolt. After changing the elevation angle, by rotating the mounting metal fitting within the range of the first circular arc elongated hole about the second bolt, the angle of the measuring instrument with respect to the mounted portion in the further elevation angle direction. Change is achieved.

Then, by connecting the two mounting brackets in reverse, the angle change in the depression angle direction of the measuring device with respect to the mounted portion is achieved twice within the range of the two arc-shaped long holes as in the above. To be done.

That is, the angle change in the depression / elevation direction of the measuring instrument is achieved over the range twice as large as that of the two circular arc long holes.

Further, within the range of the first and second arc-shaped elongated holes around the bolt in the direction orthogonal to the attached portion, the angle change of the measuring instrument with respect to the attached portion in the left-right direction is achieved.

According to the characteristic configuration of the second invention, the angle of depression and elevation can be changed within the range of each of the two arc-shaped elongated holes without reversing the connection of the two mounting fittings.

〔Example〕

 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

1 and 2, 1 is a measuring instrument such as a radiation thermometer, 2 is a measuring instrument mounting base, and this measuring instrument mounting base 2
As shown in FIG. 3, two mounting members (FIGS. 4 and 5) that are L-shaped in side view and are plane-symmetrical to each other are formed.
(Refer to the drawing) 3 and 4, and two bolts 5a and 5b connecting the both fittings 3 and 4.

For one of the mounting brackets 3, the sixth specific example will be described.
Describing based on FIG. 7 and FIG. 7, one surface portion A of the mounting fitting 3 is provided with the first and second surfaces in a state of line symmetry.
Arc long holes a ₁ and a ₂ are formed, and the other surface portion B is formed with first to third bolt insertion holes b ₁ , b ₂ and b ₃ .

The first and second arc-shaped elongated holes a ₁ and a ₂ are formed by connecting two points P ₁ and P ₂ on the same axis P parallel to the other surface portion B to one end of each arc-shaped elongated hole a ₁ and a _2. With respect to the center of the partial hole c and the center of the arcuate slots a ₂ and a ₁ on the other side, the longitudinal center line Q _{1 of} the arcuate slots a ₁ and a ₂
It is formed so as to be biased toward the other surface portion B side with respect to the same axis P so that Q ₂ passes through the centers (points P ₂ , P ₁ ) of the arcuate elongated holes a ₂ , a _{1 on} the other side. .

The bolt insertion holes b ₁ , b ₂ and b ₃ are formed in the two bolts 5a and 5a.
As the female screw hole for screwing b, the one surface portion A
Is formed on the same axis R parallel to the same axis R and on a portion opposite to the one surface portion A with respect to the same axis R. More specifically, the center of the end hole c on the same axis P (point The first and second bolt insertion holes b ₁ and b ₂ are formed by aligning the bolt hole centers with P ₁ and P ₂ ) and at the same time, either one of the circular arc elongated holes (for convenience, the second circular arc elongated hole a ₂ ) The center of the other end hole d
Align the center of the bolt hole with P ₃ and insert the third bolt insertion hole b ₃
Has been formed.

As is apparent from FIGS. 4 and 5, the other fitting 4 has a shape symmetrical to the one fitting 3, and the two fittings 3 and 4 are
It is formed by bending a flat plate material formed with the circular arc long holes a ₁ and a ₂ and the bolt insertion holes b ₁ , b ₂ and b ₃ at a right angle, and only by changing the bending direction. They have substantially the same structure, and a set of two types of mounting hardware 3, 4
Can be obtained at low cost.

However, it is essential that all the formation positions of the arc-shaped elongated holes a ₁ and a ₂ and the bolt insertion holes b ₁ , b ₂ and b ₃ are plane-symmetrical, including the outer shape of the mounting brackets 3 and 4. It is not a requirement but the point is that two arcuate slots a ₁ and a ₂ are formed in one surface portion A and the other surface portion B is in a state of plane symmetry with respect to each other between the two fittings 3 and 4. It is sufficient that the three bolt insertion holes b ₁ , b ₂ , b ₃ are formed. In short, for example, the arcuate elongated holes a ₁ and a _{2 of the one} mounting member 3 and the bolt insertion hole b
_{Even if} at least one of ₁ , b ₂ and b ₃ is formed by moving in parallel, there is almost no problem in changing the angle described later.

Two points on the same axis P are attached to each of the attachment target (attached portion) 6 of the measuring instrument mount 2 and the measuring instrument 1.
It is assumed that the mounting holes e and f having a pitch corresponding to P ₁ and P ₂ are formed. In other words, with reference to the two mounting holes f formed in the measuring instrument 1, the first and second arcuate elongated holes a ₁ and a ₂ and the first to third bolt insertion holes b. ₁ ,
The b ₂ , b ₃ and the mounting hole e are formed.

An example of measuring instrument mounting by the measuring instrument mounting base 2 and an operation of changing the mounting angle of the measuring instrument 1 at that time will be described. A bolt inserted into the first arc-shaped long hole a _{1 of} one surface portion A of the two fittings 3 and 4 connected to each other is referred to as a first bolt 5a, and is inserted into the second arc-shaped long hole a _2. This bolt is called the second bolt 5b.

As shown in FIGS. 1 to 3, one mounting bracket 3
The bolt 7 is inserted into the arc-shaped long holes a ₁ and a _2, and the bolt 7 is screwed into the mounting hole e of the mounted portion 6 to mount the one mounting bracket 3 on the mounted portion 6.

The first and second bolts 5a, 5b are respectively inserted into the first and second arcuate elongated holes a ₁ , a ₂ of the other mounting member 4, and the bolts 5a, 5b are attached to the other surface portion of the one mounting member 3. The measuring instrument mounting base 2 is assembled into a Z shape by being screwed into the first and third bolt insertion holes b ₁ and b ₃ formed in B, and the first and second mounting brackets 4 are mounted. Insert the bolt 8 into the bolt insertion holes b ₁ and b ₂ and attach the bolt 8 to the measuring instrument 1
The measuring instrument 1 is screwed into the mounting hole f of
Attach to.

In mounting the measuring instrument 1 on the other mounting fixture 4, the bolt 8 is inserted through the first and third bolt insertion holes b ₁ and b ₃ of the other mounting fixture 4 and the bolt 8 is attached to the measuring instrument 1. Although it may be screwed into the mounting hole f of No. 1, the mounting angle of the measuring instrument 1 with respect to the other mounting bracket 4 is the same as the distance between the centers of the second and third bolt insertion holes b ₂ and b _3. Since the bolt 8 is biased and looks bad, the bolt 8 is inserted through the first and second bolt insertion holes b ₁ and b ₂ , and the measuring instrument 1 is attached to the other mounting member 4.

As shown in FIGS. 2 and 3, one end hole c of the first circular arc long hole a ₁ is brought into contact with the bolt 5a, and
The assembled state of the mounting base 2 in which the other end hole d of the second circular arc long hole a ₂ is brought into contact with the bolt 5b is referred to as a basic posture for convenience.

A schematic diagram of this basic posture is shown in FIG. 8 (A), and in this state, as shown in FIG. 8 (B), the first bolt
By changing the other fitting 4 in the counterclockwise direction within the range of the second arc-shaped long hole a ₂ around 5a, the angle of the measuring instrument 1 with respect to the attached portion 6 in the elevation direction is changed. Is achieved, and after changing the elevation angle at which the end of the second arcuate elongated hole a ₂ contacts the second bolt 5b, as shown in FIG. By further rotating the other mounting member 4 in the counterclockwise direction within the range of the first arc-shaped long hole a ₁ , the angle of the measuring instrument 1 with respect to the mounted portion 6 in the elevation angle direction can be further changed. To be achieved.

Then, as shown by phantom lines in FIG. 3, the two mounting members 3 and 4 are reversed, and the other mounting member 4 is mounted on the mounted portion 6 and also shown in FIG. 9 (A). As described above, the second bolt 5b is inserted into the second arc-shaped long hole a ₂ of the one mounting member 3, the third bolt is inserted into the third bolt insertion hole b ₃ of the other mounting member 4, and the first bolt is inserted. 5a
Through the first circular arc long hole a ₁ and screwed into the first bolt insertion hole b ₁ to expose the basic posture of the mounting base 2.

In this state, as shown in FIG. 9 (B), by rotating the one fitting 3 in the clockwise direction within the range of the second circular arc long hole a ₂ around the first bolt 5a. ,
After changing the depression angle of the measuring instrument 1 in the depression angle direction with respect to the attached portion 6 and changing the depression angle at which the end of the second arc-shaped elongated hole a ₂ contacts the second bolt 5b, FIG. As shown in C), by further rotating the one mounting bracket 3 in the clockwise direction within the range of the first circular arc long hole a _{1 about} the second bolt 5b, the mounting target 3 is rotated. A further change in the depression angle of the measuring device 1 with respect to the part 6 is achieved.

On the other hand, as shown in FIG. 10, in the mounting state of the one mounting bracket 3 to the mounted part 6, the one mounting bracket within the range of the first arc-shaped long hole a ₁ around the one bolt 7. By rotating 3 in the counterclockwise direction, the angle change of the measuring instrument 1 to the left with respect to the attached portion 6 is achieved, and the second circular arc long hole a ₂ around the other bolt 7 is formed. By rotating the one fitting 3 in the clockwise direction within the range, the right angle change of the measuring instrument 1 with respect to the mounted portion 6 is achieved.

It should be noted that the other mounting bracket 4 for the mounted portion 6
Needless to say, even in the attached state, the angle change of the measuring instrument 1 with respect to the attached portion 6 in the left-right direction can be achieved in the same manner as described above.

In addition, the other surface B of the mounting metal fitting 3 (or 4) is mounted on the mounted portion 6 and
Even in a mode in which the measuring instrument 1 is mounted on one surface portion A of the mounting bracket 4 (or 3) connected to (or 4), it is within the range of double the _two arc-shaped long holes a ₁ and a ₂ . In the above, the angle of the measuring instrument 1 can be changed in the depression / elevation direction, and of course, the first and second circular arc elongated holes around the two bolts 8
Within the range of a ₁ and a ₂ , it is possible to change the angle of the measuring instrument 1 in the left-right direction.

Further, in any of the above-described mounting modes of the mounting base 2, the entire mounting base 2 or any one of the mounting brackets 3 (or 4) is inverted by 180 degrees about an axis line orthogonal to the mounted portion 6. By doing so, the measuring device 1 is mounted on the opposite side in an inverted Z-shape mounting base (first
(See FIG. 11) 2 or a U-shaped or inverted U-shaped mounting base (see FIG. 12 or 13) 2 can be configured, and in any assembling mode, the mounting target There is no change in the angle change range in the depression / elevation direction of the measuring instrument 1 with respect to the portion 6.

FIG. 14 shows the mounting base 2 of the second embodiment. This one also comprises two L-shaped fittings 3 and 4 which are plane-symmetrical to each other, and the connecting surface portion C of one fitting 3 has the same configuration as that of the first embodiment. 1st and 2nd
The circular arc long holes a ₁ and a ₂ are formed, and at the connecting surface portion D of the other mounting member 4, the bolt hole center is formed at the center of each end hole c and d of the circular arc long holes a ₁ and a _2. The first to the fourth bolt insertion holes b _{1 to} b ₄ are formed in a state where they are aligned with each other, and it is natural because of the plane symmetry, but the other surface portion of the one mounting member 3 is provided with the first to the fourth portions. _No. 4 bolt insertion holes b _{1 to} b ₄ are formed, and first and second arc-shaped elongated holes a ₁ and a ₂ are formed on the other surface portion of the other mounting member 4.

The holes b _{1 to} b ₄ formed on the other surface of the one mounting member 3 are for fastening the measuring device, and the circular arc long hole a formed on the other surface of the other mounting member 4 is used. ₁ , a
Numeral ₂ is a metal fitting fastening to the attached part 6, and since it is not necessary to form the two fittings 3 and 4 in plane symmetry as described later, it is unnecessary to attach the measuring instrument 1. The third and fourth holes b ₃ and b ₄ may be omitted, and the holes b ₁ and b ₂ for fastening the measuring device may be structurally the same as the arc-shaped elongated holes a ₁ and a _2. .

In the above configuration, the other mounting member 4 is mounted on the mounted portion 6, and as shown in FIG. 15 (A), the mounting member 3 is connected to the first circular arc long hole a ₁ of the connected surface portion C. and inserting the first bolt 5a, with screwing the first bolt 5a to the first bolt insertion hole b ₁ of the other of the coupling surface portion D, the a first bolt 5a of the first arc elongated hole a ₁ While the one end hole c is brought into contact, the second bolt is inserted into the second circular arc long hole a ₂ .
5b and insert the second bolt 5b into the third bolt insertion hole.
with screwed to b _3, the state in which the other end hole d of the second arc elongated hole a ₂ is brought into contact with the second bolt 5b is a first basic position of the mount 2, and 16 Figure (a), the said other mounting bracket 4 remains attached to the mounting portion 6, the first bolt 5a of inserting the first arc elongated hole a ₁
Is screwed into the fourth bolt insertion hole b _4, and
The other end hole d of the first arc elongated hole a ₁ is brought into contact with the bolt 5a, while the second bolt 5b inserted into the second arc elongated hole a ₂ is screwed into the second bolt insertion hole b ₂ . Together with the second bolt 5b
The second basic posture of the mounting base 2 is a state in which the one end hole c of the second arc-shaped long hole a ₂ is brought into contact with.

Then, as shown in FIG. 15 (B), the one fitting 3 is rotated counterclockwise within the range of the second circular arc long hole a ₂ around the first bolt 5a. Thus, the angle change in the elevation angle direction of the measuring instrument 1 with respect to the attached portion 6 is achieved, and the end of the second arc-shaped elongated hole a ₂ is the second bolt.
After changing the elevation angle in contact with 5b, as shown in FIG. 15 (C), within the range of the first arc-shaped elongated hole a _{1 about} the second bolt 5b, the one mounting bracket 3 is attached. Further rotation in the counterclockwise direction achieves a further angle change in the elevation angle direction of the measuring instrument 1 with respect to the attached portion 6.

On the other hand, as shown in Figure No. 16 (A), the first and second bolt 5a, the mount 2 again screwed 5b to the fourth and second bolt insertion holes b _4, b ₂ a Switch to 2 basic postures,
As shown in FIG. 16 (B), within the range of the first arc-shaped elongated hole a ₁ around the second bolt 5b, the one fitting 3
Is rotated clockwise, an angle change in the depression angle direction of the measuring instrument 1 with respect to the attached portion 6 is achieved, and the end of the first arc-shaped elongated hole a ₁ is the first bolt 5a.
After the depression angle is changed, the one mounting bracket 3 is further attached to the watch within the range of the second circular arc long hole a _{2 about} the first bolt 5a as shown in FIG. 16 (C). By rotating in the turning direction, the angle of the measuring instrument 1 with respect to the attached portion 6 can be further changed in the depression direction.

That is, in the mounting base 2 of the first embodiment, the measuring device 1
Two mounting brackets for changing the angle of depression
In contrast to the need to reverse the vertical direction of 3,4, the configuration of the second embodiment is characterized in that it is not necessary to reverse the vertical direction of the two mounting brackets 3,4. is there.

The surface portion on the side where the bolt insertion hole is formed is attached to the attached portion 6
The mounting mode of the mounting base 2 that is fixed to the mounting base 2, or the entire mounting base 2 or any one of the mounting brackets 3 (or 4) is reversed by 180 degrees about an axis line orthogonal to the mounted portion 6 and is reversed. It goes without saying that it is possible to adopt an assembling mode of the mounting base 2 having a Z shape, a U-shape, or an inverted U-shape.

Further, in any of the configurations of the first and second embodiments, 2
The individual mounting brackets 3 and 4 are formed symmetrically, but the first
In the embodiment, the arc-shaped elongated holes a ₁ of the surface portions A and B that are connected to each other,
The arc long holes a of the connected surface portions C and D which secure the relationship between a ₂ and the bolt insertion holes b ₁ , b ₂ and b ₃ and are connected to each other in the second embodiment.
If the relationship between ₁ and a ₂ and the bolt insertion holes b _{1 to} b ₄ is secured,
For example, to change the curvature of the arc-shaped long hole for fastening metal fittings and fastening measuring instruments, and to omit the third and fourth bolt insertion holes b ₃ and b ₄ that are not necessary for fastening the measuring instrument 1. Various modifications are possible.

Further, although the L-shaped fittings 3 and 4 are illustrated as examples, the fittings can be modified into, for example, a T-shape having two surfaces orthogonal to each other.

[Effect of device]

As described above, according to the mounting base of the measuring instrument of the present invention, the arc length of the arc-shaped long hole in the conventional mounting base and the center from the center line in the longitudinal direction of the arc-shaped long hole to the center of the bolt insertion hole. As is clear from a comparison of the case where the mounting base of the present invention is configured with the same dimensional relationship as these based on the inter-dimensions, the mounting strength of the mounting base is increased while securing the same measuring instrument mounting strength as the conventional one. Without doing so, it is possible to significantly increase the angle of elevation of the measuring instrument with respect to the mounted part and the range of change in the horizontal direction.

Moreover, since the angle change range in the depression / elevation direction has been significantly increased, even if the mounting orientation of the mounting base for the measuring instrument is changed, the angle change range in the depression / elevation direction may change significantly. Therefore, the measuring instrument can be mounted at a desired angle, and the object of the present invention can be achieved by a simple improvement as a whole.

[Brief description of drawings]

FIG. 1 is a front view of a measuring instrument mount shown together with the measuring instrument,
2 is a side view of the same, FIG. 3 is an exploded perspective view of a measuring instrument mounting base, FIG. 4 is a perspective view of one mounting bracket, FIG. 5 is a perspective view of the other mounting bracket, and FIG. FIG. 7 is a plan view of the mounting bracket of FIG. 8 (A) to 8 (C) are explanatory views showing the procedure for changing the angle of the measuring instrument in the elevation direction, and FIGS. 9 (A) to 9 (C) are explanations showing the procedure for changing the angle of the measuring instrument in the depression direction. FIG. 10 and FIG. 10 are explanatory views showing a state in which the angle of the measuring instrument is changed in the left-right direction. 11 to 13 are front views showing another manner of assembling the measuring instrument mounting base. FIG. 14 is an exploded perspective view of the measuring instrument mounting base of the second embodiment,
15 (A) to 15 (C) are explanatory views showing the procedure for changing the angle of the measuring instrument in the elevation direction in the second embodiment, and FIGS. 16 (A) to 16 (C).
(C) is an explanatory view showing an angle changing procedure in the depression angle direction of the measuring instrument in the second embodiment. FIG. 17 is a perspective view of a conventional measuring instrument mounting base. 3 ... One mounting bracket, 4 ... Other mounting bracket, 5a, 5b ... Connecting bolt, 6 ... Attached part, 7 ...
… Bolts for metal fittings, 8… Bolts for measuring instruments, A…
... one surface portion, B ...... other surface portion, C, D ...... the coupled surface portion, a _1, a ₂ ...... arc elongated hole, b ₁ ~b ₄ ...... bolt insertion hole,
c ...... one end hole, d ...... other end hole, P ...... same axis, P _1, P ₂ ...... two points, Q _1, Q ₂ ...... longitudinal centerline of the arc slot .

Claims (2)

[Scope of utility model registration request] 1. A mounting member comprising two mounting members having two surface portions which are orthogonal to each other, and a bolt connecting the both mounting members, wherein the two mounting members have one surface symmetrical with respect to each other. Two arc-shaped long holes are formed in the surface portion, and three bolt insertion holes are formed in the other surface portion. The two arc-shaped long holes have two points on the same axis line at the ends of the arc-shaped long hole. With respect to the center of the hole and the center of the other side of the elongated arc hole, it is offset to one side with respect to the same axis so that the center lines in the longitudinal direction of the elongated holes pass through the centers of the other side of the elongated arc holes. The bolt insertion hole is formed so that the center of the bolt hole coincides with the center of the end hole on the same axis and the center of the other end hole of any one of the arc-shaped elongated holes. This is a mounting base for measuring instruments. 2. A mounting member comprising two mounting members having two surface portions which are orthogonal to each other and a bolt for connecting the mounting members, and two arc-shaped long holes are formed on a surface to be connected of one mounting member. The four bolt insertion holes are formed on the connected surface of the other mounting member, and the mounting holes for the bolts for fastening the measuring instrument are formed on one of the remaining surface parts of each mounting member. A mounting hole for a bolt for fastening a metal fitting to a mounted portion is formed on the other surface portion of the two arc-shaped long holes, and the two arc-shaped long holes have two points on the same axis line at the center of the end hole of the arc-shaped long hole and the other side. With respect to the center of the circular arc elongated hole, the bolts are formed so as to be offset to one side with respect to the same axis so that the center lines in the longitudinal direction of the circular arc elongated holes pass through the centers of the opposite circular arc elongated holes. The insertion hole is 2
It is formed so that the center of each bolt hole is aligned with the center of each end hole of each arc-shaped long hole, and further, at least one bolt attachment hole for fastening the measuring instrument or for fastening the metal fitting is structurally configured by the two of the two. A mounting base for a measuring instrument, which is formed in the same shape as a circular arc long hole.