JP2014065286A - Undercut gauge provided with writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that conventional undercut gauges require time and labor for marking at measured positions because marking is infeasible if pressing with carbon paper between, applying a marker solution to mark or scratching the tip part for marking is not carried out owing to the fact that the tip of the measuring part of the undercut gauges is made of a material, e.g. a metal, being difficult to write.SOLUTION: The tip of the measuring part of an undercut gauge is composed of a pen point of a writing instrument, instead of a conventional metal, so as to allow marking at a measured position without special procedures.

Description

Technology field

The present invention relates to the measurement and marking of an undercut amount, which is an accessory device of a surveyor.

In the conventional undercut gauge, in order to mark the amount of the undercut, it is necessary to sandwich carbon paper or attach a marker solution or the like to the tip of the measuring tool.

This has the following drawbacks.
In order to mark an arbitrary undercut amount, it took time and effort because no writing instrument was attached to the measurement point. The present invention has been made to eliminate the above drawbacks.

The writing instrument (1) was attached to the measuring rod (3) attached to the surveyor, and the pen tip (5) was made to be able to be inserted and removed by rotating the writing instrument with the screw bolt (2) attached to the writing instrument.
The pen tip can be read as it is on the scale plate (4).
The present invention is an undercut gauge with a writing instrument that has a variable undercut amount and has the above configuration.

By using the present invention, the required undercut amount can be obtained by rotating the writing instrument and reading the scale, and the position can be directly marked on the object.

Perspective view of the undercut gauge of the present invention The perspective view of the screw bolt side of this invention and the part of the writing instrument with a scale plate The perspective view of the measuring needle indicating needle screw nut side of the present invention and those fixtures Diagram of the product of the present invention set on a commercially available surveyor Enlarged view of measuring and marking an object with the product of the present invention

Embodiments of the present invention will be described below.
(B) A writing bolt (1) is provided with a screw bolt (2), a scale plate (4) is further provided (b), and an indicator needle (6) is attached to the screw nut side (7) that matches the screw bolt attached to the writing tool (1). ) Is fixed to the measuring rod (3).
(C) Insert the screw bolt side (2) into the screw nut side (7).
A method of marking with an arbitrary amount of undercut will be described.
In the case of a mechanical pen that adjusts the pen tip (5) so that the pen tip (5) is in the same position as the side of the measuring rod (3) that contacts the object, roughly remove the lead with the pen tip of the writing instrument. adjust.
Next, the writing instrument (1) is turned to adjust the pen tip, but a margin is left until the pen tip (5) contacts the object. In the case of mechanical pens, it is accurate to keep the nib at a right angle.
Next, the writing tool (1) is rotated in the direction in which the pen tip (5) comes out while counting the scale (4) by an amount desired to be put out from the measuring rod (3).
A single rotation of the screw advances the pitch of the screw and divides it by the total number of scales.
Next, as shown in [FIG. 5], the measuring rod (3) is raised while being in contact with the object, and is marked when the pen tip (5) contacts the object (10). It is an undercut whose position is determined.
As an example, if the pitch of the screw is 1 mm, in the case of a writing instrument attached at a right angle to the measuring rod, the pen tip will move 1 mm when the scale plate rotates once. The rotation is 1 mm and the scale is 0.1 mm.
If you want to mark with an undercut of 0.35 mm.
First, the pen tip (5) is adjusted to the position on the side in contact with the object of the measuring rod (3).
Next, the writing instrument (1) is rotated in the direction in which the pen tip (5) comes out of the object of the measuring rod (3) through three and a half of the scale on the scale plate (4). Since the 0.35 mm nib (5) comes out, it is marked while the measuring rod (3) is in contact with the object. As a result, an undercut of 0.35 mm can be marked.
When the writing instrument is fixed at an angle from the measuring rod, the amount of advancement of the pen tip is reduced by that amount, so it can be used by calculating the scale.

DESCRIPTION OF SYMBOLS 1 Writing instrument 2 Screw bolt 3 Measuring rod 4 Scale plate 5 Pen tip 6 Pointer needle 7 Screw nut side 8 Fixing of screw nut side and measuring rod

Claims (1)

A writing bolt (1) is provided with a screw bolt side (2) and a scale (4).
The measuring nut (3) is provided with a screw nut side (7) and a scale indicating needle (6) and fixed with a fixture (8).
A writing instrument in which the screw bolt side (2) is placed in the screw nut side (7) and rotated so that the pen tip (5) can be seen by the scale on the scale.

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