CN2086884U

CN2086884U - Coordinate rule

Info

Publication number: CN2086884U
Application number: CN 90210566
Authority: CN
Inventors: 李涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-01-17
Filing date: 1990-01-17
Publication date: 1991-10-16

Abstract

The utility model relates to a vernier rule for measuring the object configuration, belonging to the field of the metering tool. According to the principle that any point on the coordinate can be indicated by the ordinate and the abscissa, the vernier rule obtain the coordinate of the position point of the object configuration; the position points are connected so that the configuration of the object can be formed. The vernier rule adopts a longitudinal scale (1) and a horizontal scale (2) to comprise a coordinate scale; the horizontal scale reciprocates to indicate the ordinate, and moves right and left to indicate the abscissa; thus, the object configuration is obtained via measuring the coordinate of the object configuration.

Description

Coordinate rule

The vernier that the utility model relates to a kind of Measuring Object profile is surveyed the implements mapping in the chi, particularly historical relic archaeological work.

Historical relic device shape is measured at present, no specific purpose tool.Two kinds of methods of basic employing: a kind of projection graphing method is to utilize light that the shadow of implements profile is thrown into to hold on the shadow screen, obtains this implements outline figure.But in the practical application, the projected size of implements be difficult for to be grasped, retouched figure after, the problem that also has a ratio to increase and decrease.Another kind is a coordinate method, utilizes coordinate paper and upright set square to constitute one group of rectangular coordinate, measures the coordinate figure of some points of device shape profile, draws on drawing, contrasts the original again and connects each point and obtain its orthogonal projection figure.During measurement, measure the coordinate of the coordinate in length and breadth of the point of determining on the implements outline line respectively with bisecting compasses.Shortcoming: the one, itself does not have numerical value open bisecting compasses, again its length of dipstick metering; The 2nd, must note allowing bisecting compasses level and set square keep vertical constantly, measurement data is just accurate, and this is more bothersome; The 3rd, set square is unfixing easily to be moved, and this influences the accuracy of measurement again.

The purpose of this utility model will address the above problem exactly, and a kind of special measurement instrument is provided.

The utility model is achieved in that with a upright chi and crossfoot forms one group of rectangular coordinate, and must there be the movable bayonet socket of a similar vernier caliper joint portion of scale in length and breadth, and the screw that rotates on it can be determined the elasticity that crossfoot moves about.About the crossfoot,, represent horizontal ordinate about crossfoot in order to the expression ordinate.Because the yardstick of crossfoot is arranged from right to left, so the distance that horizontal staff shifts out to the right is exactly a horizontal ordinate numerical value, and the crossfoot indication is exactly a Y value in the position of vertical scale.Utilize coordinate in length and breadth just can determine the profile of measured object like this.

Be illustrated below in conjunction with accompanying drawing:

This chi is by a vertical scale (1) and a horizontal staff (2) and a vernier bayonet socket (3) vertical cartel, and the coordinatometer that formation can move up and down is indulged the bottom of scale and used screw (4) to be connected with a platform (5).Make and oneself vertically be positioned on the platform.

The numerical value face of vertical scale (1) and a parallel sided of platform (5), middle distance can be fallen 0 number of degrees value with horizontal staff (2) and be as the criterion.

Claims

A kind of Coordinate rule that is used for the Measuring Object profile, form by vertical scale (1) horizontal staff (2) chain-wales (5), it is characterized in that vertical scale (1) is connected with the bayonet socket that moves about (3) with horizontal staff (2), the bayonet socket that moves about has screw on (3), the elasticity of may command horizontal staff (2) on vertical scale; Vertical scale (1) bottom is connected with platform (5) with screw (4) and is vertical with platform; The numerical value face of vertical scale (1) and a parallel sided of platform (5), distance wherein can be fallen zero degree with horizontal staff (2) and be as the criterion.