CN202522172U

CN202522172U - Diameter measuring device

Info

Publication number: CN202522172U
Application number: CN2012201242220U
Authority: CN
Inventors: 张冰
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-29
Filing date: 2012-03-29
Publication date: 2012-11-07
Anticipated expiration: 2022-03-29

Abstract

The utility model provides a diameter measuring device belonging to the field of mathematical appliances, which structurally comprises a main ruler, two auxiliary rulers and a sliding block. The upper and lower sides of the main ruler are provided with pits respectively. The sliding block is arranged in the pits and can slide along the main ruler. The auxiliary rulers are respectively arranged on the upper and lower side edges of the sliding block and are vertical to the upper and lower side edges of the sliding block. The two ends of the main ruler are respectively provided with a positioning button, while the two ends of the main ruler are hinged to the positioning buttons. Compared with the prior art, the diameter measuring device has the advantages of reasonable design, simple structure, good usage effect and the like.

Description

A kind of diameter measurement device

Technical field

The utility model relates to a kind of mathematics apparatus, specifically a kind of diameter measurement device.

Background technology

As everyone knows, stationery purposes in the market is more single, and particularly the student need be through the method for the mapping diameter line that draws earlier when measuring diameter of a circle with ruler or set square, and again with ruler tolerance, operation not only bothering like this, and efficient is extremely low.

Summary of the invention

The technical assignment of the utility model is the deficiency to prior art, and a kind of diameter measurement device reasonable in design, simple in structure is provided.

The utility model solves the technical scheme that its technical matters adopted: comprise that main scale, secondary chi and slide block constitute; Secondary chi is provided with two; Said main scale is respectively arranged with pit in both sides up and down; Said slide block is arranged in the pit and can slides along main scale, and said secondary chi is separately positioned on the dual-side up and down of slide block and perpendicular setting; Said main scale two ends are respectively arranged with navigation button and are hinged with it.

Main scale is provided with scale mark.

Main scale, secondary chi and slide block are transparent plastic and process.

The diameter measurement device of the utility model compared with prior art, the beneficial effect that is produced is:

Have characteristics such as reasonable in design, simple in structure, easy to use, function admirable, practicality, operate comparatively simply, use cost is low, has reduced user's labour intensity, guarantees that study and work carries out smoothly.

Description of drawings

Accompanying drawing 1 is the main TV structure synoptic diagram of the utility model;

Accompanying drawing 2 is the structural representations of looking up of the utility model.

Among the figure: 1, navigation button, 2, secondary chi, 3, slide block, 4, scale mark, 5, main scale, 6, pit.

Embodiment

Below in conjunction with accompanying drawing the utility model is done following the detailed description.

Shown in accompanying drawing; The mathematics apparatus of the utility model; Its structure comprises that main scale 5, secondary chi 2 and slide block 3 constitute, and secondary chi 2 is provided with two, and said main scale is respectively arranged with pit 6 in both sides about in the of 5; Said slide block 3 is arranged in the pit 6 and can slides along main scale 5, and said secondary chi 2 is separately positioned on the dual-side up and down of slide block 3 and perpendicular setting; Said main scale 5 two ends are respectively arranged with navigation button 1 and are hinged with it.

Main scale 5 is provided with scale mark 4.Main scale 5, secondary chi 2 and slide block 3 are transparent plastic and process.

Through the moving sets chi, directly read the numerical value of circular diameter from main scale.During operation the point of origin at navigation button place on the main scale being gone up any with circle overlaps; Pin this navigation button; Moving sets chi and the summit of each secondary chi the same side is overlapped with circle simultaneously again, the summit line between the said secondary chi is exactly one section string of this circle, and the longitudinal centre line of said main scale is exactly the perpendicular bisector of this string at this moment; Diameter of a circle just on the perpendicular bisector of string, therefore is easy to obtain this circular diameter from main scale.

Its processing and fabricating of mathematics apparatus of the utility model is simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.

Except that the described technical characterictic of instructions, be this professional's known technology.

Claims

1. diameter measurement device; Comprise that main scale, secondary chi and slide block constitute; Secondary chi is provided with two; It is characterized in that said main scale up and down is respectively arranged with pit in both sides, said slide block is arranged in the pit and can slides along main scale, and said secondary chi is separately positioned on the dual-side up and down of slide block and perpendicular setting; Said main scale two ends are respectively arranged with navigation button and are hinged with it.

2. a kind of diameter measurement device according to claim 1 is characterized in that main scale is provided with scale mark.

3. a kind of diameter measurement device according to claim 1 is characterized in that main scale, secondary chi and slide block are transparent plastic and process.