CN110039930A - A kind of multi-functional geometric drawing ruler - Google Patents

Abstract

The present invention relates to a ruler, more specifically to a multifunctional geometric ruler. Including datum reference ruler, auxiliary ruler, adjustment ruler, trimmer, locker, height ruler and angle ruler, you can use the datum reference ruler as a reference line, and you can quickly measure or draw by adjusting the distance between the height ruler and the datum reference ruler A number of parallel lines can be drawn; the right angle can be quickly measured or drawn by the perpendicularity of the angle ruler and the height ruler, or the rotation of the angle ruler can assist in drawing a circle; the height ruler can be fine-tuned by the rotation of the spinner, which is convenient for accurate measurement or drawing; The present invention can be expanded to be convenient for measuring length, and can also be collapsed and overlapped for easy portability or simple measurement.

Description

A multifunctional geometric ruler

technical field

The present invention relates to a ruler, in particular to a multifunctional geometric ruler.

Background technique

Rulers are widely used in mathematics, measurement, engineering and other disciplines. According to different needs, rulers can be classified into straight rulers, square rulers or triangle rulers, etc. However, in the prior art, in order to draw or measure straight lines or angles, a set of The ruler may be inconvenient to use, easy to lose or difficult to keep.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multifunctional geometric ruler, which can measure or draw various geometric figures through deformation or different usages.

The object of the present invention is achieved through the following technical solutions:

A multifunctional geometric ruler, comprising a datum reference ruler, an auxiliary ruler, an adjustment ruler, a trimmer, a locker, a height ruler and an angle ruler, characterized in that the lower end of the auxiliary ruler is rotatably connected to the left end of the datum reference ruler , the lower end of the adjustment ruler is slidably connected to the right end of the reference ruler, the middle of the auxiliary ruler is rotatably connected to the middle of the adjustment ruler, the upper end of the auxiliary ruler is connected to the right end of the height ruler, and the upper end of the adjustment ruler is connected to the height ruler. At the left end, the upper end of the angle ruler is rotated and connected to the right end of the height ruler.

The reference ruler includes a reference ruler body, an inner gear ring, a bearing, a threaded hole I and a guide rail I. The left end of the reference ruler body is fixedly connected to the inner gear ring, and the inner gear ring is fixedly connected to the inner ring of the bearing. The right side of the rear end is provided with a guide rail I, and the upper end of the reference ruler body is provided with a height scale.

The auxiliary ruler includes an auxiliary ruler body, a tooth slot, a ring wall I, a short shaft I and a slider I. The left end of the auxiliary ruler body is provided with a tooth slot, the ring wall I is fixedly connected to the front side of the left end of the auxiliary ruler body, and the short shaft I It is rotatably connected to the right end of the auxiliary ruler body, and the slider I is fixedly connected to the rear end of the short shaft I; the inner ring of the ring wall I is fixedly connected to the outer ring of the bearing.

The adjustment ruler includes adjustment ruler body I, short axis II, slider II, connecting shaft, adjustment ruler body II and short axis III, and the right end of the adjustment ruler body I is rotatably connected to the short axis II, and the short axis The front end of II is fixedly connected to the slider II, the rear side of the left end of the adjusting ruler body I is fixedly connected to the connecting shaft, the rear end of the connecting shaft is fixedly connected to the right side of the front end of the adjusting ruler body II, and the rear side of the left end of the adjusting ruler body II is fixed The short shaft III is connected; the sliding block II is slidably connected in the guide rail I, and the middle part of the auxiliary ruler body is rotatably connected with the connecting shaft.

The fine adjuster includes a ring wall II, a hand contact portion and an outer gear ring, the rear end of the ring wall II is fixedly connected to the hand contact portion, and the front end of the ring wall II is fixedly connected to the outer gear ring; In contact with the reference ruler body, the front end of the outer ring gear meshes with the inner gear ring, and the rear end of the outer gear ring meshes with the tooth slot.

The locker includes a straight rod I, a clamping table, a straight rod II, a threaded rod and an anti-skid groove. The rod, the anti-slip groove is arranged at the rear end of the straight rod I; the threaded rod is threaded in the threaded hole I, the front end surface of the threaded rod is flush with the front end surface of the reference ruler body, and the straight rod II is slidably connected in the outer gear ring, The front end surface of the clamping table is in contact with the rear end surface of the outer gear ring, and the rear end of the straight rod I is located at the rear end of the hand contact part.

The height gauge includes a height gauge body, a guide rail II, a length scale and an angle scale. The right side of the front end of the height gauge body is provided with a guide rail II, the upper end of the height gauge body is provided with a length scale, and the right side of the lower end of the height gauge body is provided with an angle scale. ; The left end of the height gauge body is rotatably connected to the upper end of the adjusting gauge body I, and the slider I is slidably connected in the guide rail II.

The angle ruler includes an angle ruler body, a short axis IV and a length scale II, the upper side of the front end of the angle ruler body is fixedly connected to the short axis IV, and the right end of the angle ruler body is provided with a length scale II; The right end of the height gauge body.

The height gauge further includes a guide rail III, and the guide rail III is arranged at the rear end of the height gauge body.

The multifunctional geometric ruler further includes a precise reference mark, and the precise reference mark includes a slider III and an L-shaped body, and the rear end of the slider III is fixedly connected to the L-shaped body; the slider III is slidably connected to the L-shaped body. In the guide rail III, the L-shaped body is slidably connected with the upper end of the height gauge body, and the front end surface of the L-shaped body is flush with the front end surface of the height gauge body.

The beneficial effects of the multifunctional geometric ruler of the present invention are:

The datum reference ruler can be used as the reference line, and multiple parallel lines can be quickly measured or drawn by adjusting the distance between the height ruler and the datum reference ruler; The rotation of the ruler assists in drawing a circle; the height ruler can be fine-tuned by the rotation of the fine-tuner, which is convenient for accurate measurement or painting; the present invention can be expanded into a ruler for complex measurement, and can also be contracted and overlapped into a ruler that is easy to carry or perform simple measurement. .

Description of drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

Fig. 1 is the overall structure schematic diagram one of a kind of multifunctional geometrical ruler of the present invention;

Fig. 2 is the shrinkage structure schematic diagram of the present invention;

Fig. 3 is the datum reference ruler structure schematic diagram of the present invention;

Fig. 4 is the auxiliary ruler structure schematic diagram one of the present invention;

Fig. 5 is the auxiliary ruler structure schematic diagram two of the present invention;

Fig. 6 is the structural schematic diagram of the adjusting ruler of the present invention;

Figure 7 is a schematic diagram of the structure of the short shaft II and the slider II of the present invention;

Fig. 8 is the structure schematic diagram of the fine-tuner of the present invention;

Fig. 9 is the structure schematic diagram of the fine-tuner of the present invention;

Figure 10 is a schematic view of the structure of the locker of the present invention;

11 is a schematic view of the structure of a height gauge of the present invention;

Fig. 12 is the angle ruler structure schematic diagram of the present invention;

FIG. 13 is a schematic diagram of the structure of the precise reference mark of the present invention.

In the figure: datum reference ruler 1; reference ruler body 1-1; inner gear ring 1-2; bearing 1-3; threaded hole I1-4; guide rail I1-5; height scale 1-6; auxiliary ruler 2; auxiliary ruler Main body 2-1; tooth slot 2-2; ring wall I2-3; short shaft I2-4; slider I2-5; adjustment ruler 3; adjustment ruler body I3-1; short shaft II3-2; slider Ⅱ3-3; connecting shaft 3-4; adjusting ruler body Ⅱ3-5; short shaft Ⅲ3-6; fine-tuner 4; ring wall Ⅱ4-1; hand contact part 4-2; outer gear ring 4-3; 5; Straight rod Ⅰ5-1; clamping table 5-2; straight rod Ⅱ5-3; threaded rod 5-4; anti-skid groove 5-5; height gauge 6; height gauge body 6-1; 6-3; Angle scale 6-4; Guide rail Ⅲ 6-4; Angle ruler 7; Angle ruler body 7-1; Short axis Ⅳ 7-2; Length scale Ⅱ7-3; Form 8-2.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Specific implementation one:

As shown in Figure 1-13, a multifunctional geometric ruler includes a reference reference ruler 1, an auxiliary ruler 2, an adjustment ruler 3, a trimmer 4, a locker 5, a height ruler 6 and an angle ruler 7, and is characterized in that : The lower end of the auxiliary ruler 2 is rotatably connected to the left end of the reference ruler 1, the lower end of the adjustment ruler 3 is slidably connected to the right end of the reference ruler 1, and the middle of the auxiliary ruler 2 is connected to the middle of the adjustment ruler 3. The upper end of ruler 2 is rotatably connected to the right end of height ruler 6, the upper end of adjustment ruler 3 is rotatably connected to the left end of height ruler 6, and the upper end of angle ruler 7 is rotatably connected to the right end of height ruler 6. The datum reference ruler 1 can be used as the reference line, and a plurality of parallel lines can be quickly measured or drawn by adjusting the distance between the height ruler 6 and the datum reference ruler 1; the perpendicularity between the angle ruler 7 and the height ruler 6 can be quickly measured or drawn. Right angle, or assist in drawing a circle through the rotation of the angle ruler 7; the height ruler 6 can be fine-tuned by the rotation of the fine-tuner 4, which is convenient for accurate measurement or painting; the present invention can be expanded to facilitate the measurement of length, and can also be folded and overlapped for easy portability Or take simple measurements.

Specific implementation two:

As shown in Figure 1-13, the datum reference ruler 1 includes a reference ruler body 1-1, an inner gear ring 1-2, a bearing 1-3, a threaded hole I1-4 and a guide rail I1-5. The reference ruler body The left end of 1-1 is fixedly connected to the inner gear ring 1-2, and the inner gear ring 1-2 is fixedly connected to the inner ring of the bearing 1-3. The right side of the rear end of the scale body 1-1 is provided with a guide rail I1-5. The upper end of the main body 1-1 is provided with a height scale 1-6. The reference ruler body 1-1 has the function of reference. For example, by positioning the reference ruler body 1-1 at a certain place, by moving the height ruler 6 up and down, two parallel lines can be quickly determined, and the distance between the two parallel lines can be determined quickly. The distance can be determined by the displacement of the slider II3-3. When the slider II3-3 moves a certain amount to the left or right, it will be at a certain scale of the height scale 1-6. The display can directly determine the distance between the height ruler 6 and the reference ruler body 1-1. The height scale 1-6 converts the distance scale of horizontal movement into the distance scale of vertical movement. The reference ruler body 1-1 can be screwed with screws. , This screw is used to prevent the slider II3-3 from moving to the left and sliding out of the guide rail I1-5. The length of the guide rail I1-5 should be such that the slider II3-3 will not slide out of the guide rail I1-5 when the slider II3-3 moves to the maximum distance to the right. When the present invention is in the state shown in FIG. 2 , that is, when the slider II3-3 moves to the right to the maximum distance, the reference ruler 1 , the auxiliary ruler 2 , the adjustment ruler 3 , the height ruler 6 and the angle ruler 7 of the present invention are at this time. Can be stacked together, saving space and easy to carry.

Specific implementation three:

As shown in Figure 1-13, the auxiliary ruler 2 includes an auxiliary ruler body 2-1, a tooth slot 2-2, a ring wall I2-3, a short shaft I2-4 and a slider I2-5, and the auxiliary ruler body 2- The left end of 1 is provided with a tooth slot 2-2, the ring wall I2-3 is fixedly connected to the front side of the left end of the auxiliary ruler body 2-1, the short shaft I2-4 is rotatably connected to the right end of the auxiliary ruler body 2-1, and the slider I2- 5 is fixedly connected to the rear end of the short shaft I2-4; the inner ring of the ring wall I2-3 is fixedly connected to the outer ring of the bearing 1-3. In the absence of the fine adjuster 4, the auxiliary ruler 2 can rotate around the connection with the reference ruler 1. When the auxiliary ruler 2 rotates, the auxiliary ruler body 2-1 drives the adjustment ruler body I3-1 to move, and then the auxiliary ruler The main body 2-1 and the adjusting ruler main body I3-1 drive the height ruler main body 6-1 to move at the same time. The height ruler main body 6-1 should always be parallel to the reference ruler main body 1-1 during the movement process. 2-1 and the adjustment ruler body I3-1 can be realized by the cooperation. The auxiliary ruler body 2-1 and the adjustment ruler body I3-1 can also be provided with scales, which are used to facilitate the determination of the sides of the triangles involved in the two. long, easy to quickly draw triangles with different side lengths.

Specific implementation four:

As shown in Figure 1-13, the adjustment ruler 3 includes adjustment ruler body I3-1, short shaft II3-2, slider II3-3, connecting shaft 3-4, adjustment ruler body II3-5 and a short shaft II3-5. Axis III3-6, the right end of the adjusting ruler body I3-1 is rotatably connected to the short shaft II3-2, the front end of the short shaft II3-2 is fixedly connected to the slider II3-3, and the rear side of the left end of the adjusting ruler body I3-1 The rear end of the connecting shaft 3-4 is fixedly connected to the right side of the front end of the adjusting ruler body II3-5, and the rear side of the left end of the adjusting ruler body II3-5 is fixedly connected to the short shaft III3-6; The sliding block II3-3 is slidably connected in the guide rail I1-5, and the middle part of the auxiliary ruler body 2-1 is rotatably connected with the connecting shaft 3-4. When the slider II3-3 is slid out from the left end of the guide rail I1-5, and the slider I2-5 is also slid out from the guide rail II6-2, the adjustment ruler 3 and the auxiliary ruler 2 are made to overlap, and the two are moved toward each other. The counterclockwise rotation is in the same line with the reference reference ruler 1, and the height ruler 6 and the angle ruler 7 are both rotated counterclockwise, and the two are in the same line with the reference reference ruler 1, and the present invention will be extended to the longest state, becoming a straight ruler .

Specific implementation five:

As shown in Fig. 1-13, the trimmer 4 includes a ring wall II4-1, a hand contact portion 4-2 and an outer gear ring 4-3, and the rear end of the ring wall II4-1 is fixedly connected to the hand contact portion 4 -2, the front end of the ring wall II 4-1 is fixedly connected to the outer gear ring 4-3; the front end surface of the outer gear ring 4-3 is in contact with the reference ruler body 1-1, and the front end of the outer gear ring 4-3 is in contact with the inner gear The ring 1-2 is engaged, and the rear end of the outer ring gear 4-3 is engaged with the tooth slot 2-2. The trimmer 4 can fine-tune the auxiliary ruler body 2-1, so that the auxiliary ruler body 2-1 can be rotated slightly, and the distance between the height ruler 6 and the reference reference ruler 1 can be adjusted. The specific operation method is to unscrew the locker 5. The purpose of the reference ruler 1 is to allow the chucking table 5-2 not to limit the freedom of the outer ring gear 4-3 in the front and rear directions, and then to move the outer ring gear 4-3 backward by operating the hand contact part 4-2 only in contact with the tooth slot. 2-2 Contact, rotate the outer gear ring 4-3 to drive the auxiliary ruler body 2-1 to rotate slightly, so as to achieve precise and fine adjustment of the distance between the height ruler 6 and the reference ruler 1, which can quickly and accurately measure or slide. Draw two parallel lines with a certain distance, and then re-knead the outer gear ring 4-3 and the inner gear ring 1-2 to lock and adjust the distance between the height ruler 6 and the reference reference ruler 1.

Specific implementation six:

As shown in Figure 1-13, the locker 5 includes a straight rod I5-1, a clamping table 5-2, a straight rod II5-3, a threaded rod 5-4 and an anti-skid groove 5-5. The front end is fixedly connected to the card table 5-2, the front end of the card table 5-2 is fixedly connected to the straight rod II5-3, the front end of the straight rod II5-3 is fixedly connected to the threaded rod 5-4, and the anti-slip groove 5-5 is set on the straight rod I5- The rear end of 1; the threaded rod 5-4 is threaded in the threaded hole I1-4, the front end surface of the threaded rod 5-4 is flush with the front end surface of the reference ruler body 1-1, and the straight rod II5-3 is slidably connected In the outer ring gear 4-3, the front end surface of the clamping table 5-2 is in contact with the rear end surface of the outer ring gear 4-3, and the rear end of the straight rod I5-1 is located at the rear end of the hand contact portion 4-2. The lock 5 can push the outer gear 4-3 into the inner gear 1-2, so that the outer gear 4-3 and the inner gear 1-2 are kept in a kneading state, which is convenient for reducing manual operation and convenient for users. use.

Specific implementation seven:

As shown in Figure 1-13, the height gauge 6 includes a height gauge body 6-1, a guide rail II 6-2, a length scale 6-3 and an angle scale 6-4. The right side of the front end of the height gauge body 6-1 The guide rail II 6-2 is provided, the upper end of the height gauge body 6-1 is provided with a length scale 6-3, and the right side of the lower end of the height gauge body 6-1 is provided with an angle scale 6-4; the left end of the height gauge body 6-1 is rotatably connected On the upper end of the adjusting ruler body I3-1, the slider I2-5 is slidably connected in the guide rail II6-2. The use of the angle scale 6-4 in conjunction with the angle ruler 7 can quickly measure or draw a certain angle. Referring to Figure 1, when the angle ruler body 7-1 is rotated clockwise, the left end of the angle ruler body 7-1 and the angle When the scale 6-4 is tangent, the distance scale in the straight line direction is converted into an angle, and the angle scale 6-4 is the angle unit, and the acute angle formed between the angle ruler body 7-1 and the height ruler body 6-1 can be directly observed. .

Eighth specific implementation:

As shown in Fig. 1-13, the angle ruler 7 includes the angle ruler body 7-1, the short axis IV7-2 and the length scale II7-3, and the upper side of the front end of the angle ruler body 7-1 is fixedly connected to the short axis IV7 -2, the right end of the angle ruler body 7-1 is provided with a length scale II7-3; the short axis IV7-2 is rotatably connected to the right end of the height ruler body 6-1. When the angle ruler body 7-1 is perpendicular to the height ruler body 6-1, it can quickly slide out or detect the right angle. Preferably, when the angle ruler body 7-1 is perpendicular to the height ruler body 6-1, the upper part of the angle ruler body 7-1 The end face should be flush with the upper end face of the height gauge body 6-1. The length scale II 7-3 on the angle gauge body 7-1 can also be used to quickly measure a certain point between the datum reference gauge 1 and the height gauge 6. , it is convenient to use two points to determine a straight line. By rotating the angle ruler body 7-1 and using the hand to control the pen at a certain position of the angle ruler body 7-1, the circle can be quickly slid out.

Specific implementation nine:

As shown in Fig. 1-13, the height gauge 6 further includes a guide rail III6-4, and the guide rail III6-4 is arranged at the rear end of the height gauge body 6-1.

Specific implementation ten:

As shown in Figure 1-13, the multifunctional geometric ruler further includes a precise reference mark 8, and the precise reference mark 8 includes a slider III 8-1 and an L-shaped body 8-2. The slider III8-1 The rear end is fixedly connected with the L-shaped body 8-2; the slider III8-1 is slidably connected in the guide rail III6-4, the L-shaped body 8-2 is slidably connected with the upper end of the height gauge body 6-1, and the L-shaped body 8-2 The front end surface is flush with the front end surface of the height gauge body 6-1. Combining the edge of the front face of the L-shaped body 8-2 with the length scale 6-3 can accurately determine a scale, for example, it is convenient to measure a certain length or draw.

The working principle of a multifunctional geometric ruler of the present invention is as follows:

The degree of freedom in the front-rear direction of the trimmer 4 is restricted by the locker 5, so that the trimmer 4 can lock the reference reference ruler 1 and the auxiliary ruler 2, so that the auxiliary ruler 2 cannot be rotated, and further locks the reference reference ruler 1 and the height ruler 6. The distance between two parallel lines or triangles can be quickly determined by changing or locking the distance between the datum reference ruler 1 and the height ruler 6; by using the angle ruler 7 and the height ruler 6 to be perpendicular, it is possible to quickly detect or draw a right angle, and also This vertical can be used to quickly find the determined point between the reference ruler 1 and the height ruler 6, and use two points to determine a straight line to facilitate geometric drawing; by rotating the angle ruler 7 and combining the pen with the angle ruler 7, a circle can be quickly drawn. ;Make the datum reference ruler 1 by deformation

, the auxiliary ruler 2, the height ruler 6 and the angle ruler 7 are unfolded and are in the same straight line, the auxiliary ruler 2 is overlapped with the adjustment ruler 3, so that the present invention is in the longest state, forming a ruler, and the same change can also be performed to shrink into a relatively Short ruler for easy portability.

Of course, the above description does not limit the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those of ordinary skill in the art within the essential scope of the present invention also belong to the present invention. protected range.

Claims (10)

1. A multifunctional geometric ruler, comprising a datum reference ruler (1), an auxiliary ruler (2), an adjustment ruler (3), a trimmer (4), a locker (5), a height ruler (6) and an angle The ruler (7) is characterized in that: the lower end of the auxiliary ruler (2) is rotatably connected to the left end of the datum reference ruler (1), and the lower end of the adjustment ruler (3) is slidably connected to the right end of the datum reference ruler (1), The middle part of the auxiliary ruler (2) is rotatably connected with the middle part of the adjustment ruler (3), the upper end of the auxiliary ruler (2) is rotatably connected with the right end of the height ruler (6), and the upper end of the adjustment ruler (3) is rotatably connected to the height ruler (6) At the left end, the upper end of the angle ruler (7) is rotated and connected to the right end of the height ruler (6). 2. A multifunctional geometrical ruler according to claim 1, characterized in that: the datum reference ruler (1) comprises a reference ruler body (1-1), an inner gear ring (1-2), a bearing (1-2) 1-3), threaded hole I (1-4) and guide rail I (1-5), the left end of the reference ruler body (1-1) is fixedly connected to the inner gear ring (1-2), the inner gear ring (1 -2) It is fixedly connected with the inner ring of the bearing (1-3), the right side of the rear end of the ruler body (1-1) is provided with a guide rail I (1-5), and the upper end of the reference ruler body (1-1) is provided with a guide rail I (1-5). Height scale (1-6). 3. A kind of multifunctional geometric ruler according to claim 2, is characterized in that: described auxiliary ruler (2) comprises auxiliary ruler body (2-1), tooth slot (2-2), ring wall I ( 2-3), the short shaft I (2-4) and the slider I (2-5), the left end of the auxiliary ruler body (2-1) is provided with a tooth slot (2-2), and the ring wall I (2-3) It is fixedly connected to the front side of the left end of the auxiliary ruler body (2-1), the short shaft I (2-4) is rotatably connected to the right end of the auxiliary ruler body (2-1), and the slider I (2-5) is fixedly connected to the short shaft. The rear end of the shaft I (2-4); the inner ring of the ring wall I (2-3) is fixedly connected with the outer ring of the bearing (1-3). 4. A multifunctional geometrical ruler according to claim 3, characterized in that: the adjustment ruler (3) comprises an adjustment ruler body I (3-1), a short axis II (3-2), Slider II (3-3), connecting shaft (3-4), adjustment ruler body II (3-5) and short shaft III (3-6), the adjustment ruler body I (3-1) The right end is rotatably connected to the short shaft II (3-2), the front end of the short shaft II (3-2) is fixedly connected to the slider II (3-3), and the rear side of the left end of the adjusting ruler body I (3-1) is fixedly connected. Shaft (3-4), the rear end of the connecting shaft (3-4) is fixedly connected to the right side of the front end of the adjusting ruler body II (3-5), and the rear side of the left end of the adjusting ruler body II (3-5) is fixedly connected Short shaft III (3-6); the slider II (3-3) is slidably connected in the guide rail I (1-5), and the middle part of the auxiliary ruler body (2-1) rotates with the connecting shaft (3-4) connect. 5. A multifunctional geometric ruler according to claim 4, characterized in that: the trimmer (4) comprises a ring wall II (4-1), a hand touch portion (4-2) and an outer gear ring (4-3), the rear end of the ring wall II (4-1) is fixedly connected to the hand contact portion (4-2), and the front end of the ring wall II (4-1) is fixedly connected to the outer gear ring (4-3) ; The front end face of the outer ring gear (4-3) is in contact with the reference ruler body (1-1), the front end of the outer ring gear (4-3) meshes with the inner gear (1-2), and the outer ring gear ( The rear end of 4-3) is engaged with the tooth slot (2-2). 6. A multifunctional geometric ruler according to claim 5, characterized in that: the locking device (5) comprises a straight rod I (5-1), a clamping table (5-2), a straight rod II ( 5-3), threaded rod (5-4) and anti-skid groove (5-5), the front end of the straight rod I (5-1) is fixedly connected to the card table (5-2), and the front end of the card table (5-2) The straight rod II (5-3) is fixedly connected, the front end of the straight rod II (5-3) is fixedly connected to the threaded rod (5-4), and the anti-slip groove (5-5) is set at the back of the straight rod I (5-1). The threaded rod (5-4) is threaded in the threaded hole I (1-4), and the front end face of the threaded rod (5-4) is flush with the front end face of the reference ruler body (1-1). Rod II (5-3) is slidably connected in the outer ring gear (4-3), the front end face of the clamping table (5-2) is in contact with the rear end face of the outer gear ring (4-3), and the straight rod I (5-1) ) is located at the rear end of the hand touch portion (4-2). 7. A multifunctional geometrical ruler according to claim 6, characterized in that: the height ruler (6) comprises a height ruler body (6-1), a guide rail II (6-2), a length scale (6 -3) and an angle scale (6-4), the right side of the front end of the height gauge body (6-1) is provided with a guide rail II (6-2), and the upper end of the height gauge body (6-1) is provided with a length scale (6 -3), the right side of the lower end of the height gauge body (6-1) is provided with an angle scale (6-4); the left end of the height gauge body (6-1) is rotatably connected to the adjusting gauge body I (3-1) The upper end of the slide block I (2-5) is slidably connected in the guide rail II (6-2). 8. A multifunctional geometrical ruler according to claim 7, characterized in that: the angle ruler (7) comprises an angle ruler body (7-1), a short axis IV (7-2) and a length scale II (7-3), the upper side of the front end of the angle ruler body (7-1) is fixedly connected to the short axis IV (7-2), and the right end of the angle ruler body (7-1) is provided with a length scale II (7-3) ; The short axis IV (7-2) is rotatably connected to the right end of the height gauge body (6-1). 9. A multifunctional geometrical ruler according to claim 7, characterized in that: the height ruler (6) further comprises a guide rail III (6-4), and the guide rail III (6-4) is arranged on the The rear end of the height gauge body (6-1). 10. The multifunctional geometrical ruler according to claim 9, characterized in that: the multifunctional geometrical ruler further comprises a precision reference mark (8), and the precision reference mark (8) comprises a slider III (8-1) and L-shaped body (8-2), the rear end of the slider III (8-1) is fixedly connected to the L-shaped body (8-2); the slider III (8-1) is slidably connected In the guide rail III (6-4), the L-shaped body (8-2) is slidably connected to the upper end of the height gauge body (6-1), and the front end surface of the L-shaped body (8-2) is connected to the height gauge body (6-1) the front face is flush.