CN201000316Y

CN201000316Y - High precision direction gauge

Info

Publication number: CN201000316Y
Application number: CNU2006201470382U
Authority: CN
Inventors: 陈平山
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-10-20
Filing date: 2006-10-20
Publication date: 2008-01-02
Anticipated expiration: 2016-10-20

Abstract

The utility model discloses a high precision angle gauge, which belongs to the measuring appliance field. The angle gauge comprises a dial scale ruler and a vernier plate ruler. The dial scale ruler is provided with a 0 degree-360 degree dial scale, the vernier plate ruler is provided with a vernier scale, the dial scale ruler and the vernier plate ruler are surrounding the elastic bearing and making relative rotation. The dial scale ruler, the vernier plate, and the elastic bearing are tightly locked by a bolt and a nut. The utility model has the advantages that the structure design is simple and rational, the measuring is precise, the utility model is wearable, and the measuring range is large.

Description

The high precision angle gauge

Technical field:

The utility model belongs to measures drawing field, particularly a kind of protractor

Background technology:

At present used protractor has more inconvenience for the angle in the corner of measuring building etc., maybe can only judge whether the right angle, to very inconvenience of more accurate measurement.

Summary of the invention:

To be solved in the utility modelly provide a kind of reasonable in design, measure accurately, measurement range is big, can be convenient for measuring a kind of protractor in building corner

The utility model solve the problems of the technologies described above practical technical scheme be; A kind of protractor is made up of index dial chi 1 and alidade chi 2.Its design feature is that 0 °-360 ° scale is arranged on the described

index dial chi

1, and 0 ° of scale mark is parallel with measurement limit a; Alidade chi 2 has vernier graduation, and 0 scale mark of vernier graduation is parallel with measurement limit b; The calibration circle that pairing circle of graduated arc that vernier graduation forms and 0 °-360 ° scale form is with big.

The 3rd, resilient bearing, index dial chi 1 serves as that axle can relatively rotate with alidade chi 2 with resilient bearing 3, the thickness of resilient bearing 3 is slightly less than the thickness of

index dial chi

1 and 2 additions of alidade chi, and by bolt and nut 4 lockings.

The utility model compared with prior art has the following advantages and effect.

1. owing to two measure limit a and can relatively rotate, so can measure the interior exterior angle of building the corner with b;

2. owing to there is the vernier graduation measuring accuracy to improve a lot;

3. good looking appearance is easy to carry, and is simple to operate.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified

Fig. 1 is the structural representation of the utility model embodiment

Fig. 2 is the index dial chi 1 of the utility model embodiment,

Fig. 3 is an alidade chi 2,

Fig. 4 is a resilient bearing 3, the decomposing schematic representation of bolt and nut 4.

Fig. 5 is the utility model Fig. 1 I-I sectional view

Embodiment:

In Fig. 2; It is tangent with calibration circle c to measure limit a, with the distance of center of circle o be s, 0 ° of scale mark is parallel with measurement a limit, limit, opens the hole that radius is r in the center of circle.

In Fig. 3; It is tangent with the pairing circle of vernier graduation arc d to measure limit b, with the distance of center of circle o be s, 0 scale mark is parallel with measurement limit b, also opens the hole that radius is r in the center of circle.

In Fig. 4; The resilient bearing exradius is r+ Δ r, and a breach is arranged on the resilient bearing.

Index dial chi 1 is connected with suitable elastic force by resilient bearing by circular hole with alidade chi 2 in Fig. 1, and locks with bolt and nut.

The limit folding of the formed angulation of above Fig. 1 freely, degree of tightness is suitable, can measure interior exterior angle.

Claims

1. a high precision angle gauge is made up of index dial chi and alidade chi, and it is characterized in that: the center of circle of described index dial chi has circular hole, and the alidade chi has with big circular hole at arc core.

2. angle gauge according to claim 1 is characterized in that: 0 °-360 ° scale is set on the described index dial chi.

3. angle gauge according to claim 1 is characterized in that: on the described alidade chi vernier graduation is set.

4. angle gauge according to claim 1 is characterized in that: two chis are with relatively rotating around resilient bearing.

5. angle gauge according to claim 1 is characterized in that: two chis are locked by bolt and nut.