JPS6212975Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is a leveling rod that can cross or separate a vertical and horizontal rod, and particularly relates to a cross-leveling rod for photographs at construction sites.

Traditionally, this type of leveling rod was used to directly apply it to a workpiece at a construction site and photograph the progress of the construction work to provide evidence.The material for both length and width is wood or plywood reinforced with aluminum edge. The entire shape is usually made of plastic or aluminum board, and the board thickness is 5 to 10 mm in both length and width.
mm diameter is mainly used, but when taking photographs by applying it to the surface of the workpiece at the site, measurement errors due to plate thickness tend to occur between the scale edge of the leveling rod and the subject, and it is important to ensure accuracy of workpieces. There was an unavoidable hindrance.

The purpose of this project is to solve this problem by creating a triangular cross-section with thin edges for both the vertical and horizontal scales, and a relatively thick center. By using the back side of the shaku as the joint surface of the cross, not only will there be no measurement error in the thickness of the scale written on the joint surface of both the vertical and horizontal shaku, but it can also be used as a cross staff or when used separately for both the vertical and horizontal shaku. The reason for this is that the edge with the scale markings is thin so that measurement errors due to plate thickness do not occur, and accurate measurement records can be photographed.

To explain the configuration of this project with reference to the drawings, sliding guide holes 3 and 4 are bored in the longitudinal direction of the thickness center of the vertical and horizontal 2 and 1, each having a triangular cross section. The threaded end of a thumbscrew 5 inserted into the intersection through a buffer piece 7 protrudes from the back side of the vertical scale 2, and a washer 8 and a tightening screw 6 are screwed into this part, and 5a in the drawing is a thumbscrew. It is the pick head of 5.

The structure of this project is as described above, and is used as a cross leveling rod, especially for photographs showing the actual measurement of the vertical and horizontal parts at the site of small-scale construction such as road construction and gutter construction. It is well known that the loosening operation of the horizontal scales 1 and 2 is performed by inserting the thumbscrews 5 through the sliding guide holes 3 and 4 bored in the longitudinal direction of the vertical scales 2 and 4 in the longitudinal direction. Both horizontal scale 1 and horizontal scale 1 have a triangular cross-section with thinned edges on both sides, an arbitrary scale is marked on the thinned side edges, and they are joined to the surface of the object to be measured at this part, so there is no space between the object and the object when shooting. This has the practical effect of being able to record accurate work conditions without causing measurement errors due to plate thickness.

[Brief explanation of the drawing]

Figure 1 is an overall front view of the cross leveling staff, Figure 2 is a direct view from direction B in Figure 1, Figure 3 is an enlarged sectional view of the main part from direction A in Figure 1, and Figure 4 is the leveling staff. It is a partially enlarged perspective view. Explanation of symbols, 1...horizontal scale, 2...vertical scale, 3...
Horizontal sliding guide hole, 4...Vertical sliding guide hole, 5
... Thumb screw, 6 ... Tightening screw, 7 ... Buffer piece, 8
...Watsiya.

Claims (1)

[Scope of utility model registration request] A cross-leveling staff consisting of a horizontal scale 1 and a vertical scale 2, each having a triangular cross section, are connected by intersecting each other at right angles with their bases as joint surfaces, and scale markings are provided on thin side edges on the surfaces of both scales. .