This punch is used for making witness marks

| This punch is used for making witness marks

A. 60° Prick Punch

B. 30° Prick Punch

C. Centre Punch

D. 90° Centre Punch

Please scroll down to see the correct answer and solution guide.

Explanation:

Punches are used in order to make certain dimensional features of the layout permanent.

There are two types of punches. They are made up of high carbon steel, hardened and ground.

Punch	Point Angle	Application
Centre Punch	90°	This is used for locating the centre of the holes. The wide punch mark gives a good seating for starting the drill.
Prick Punch	30°	It is used for making light punch marks needed to positive dividers
Dot Punch	60°	These punches are used to make witness marks on scribed lines. This makes it easier to see accurate marking out lines.