Angle of centre punch is _______.

Explanation:

Punches:

• Punches are used in order to make certain dimensional features of the layout permanent.
• There are three types of punches. They are:
  1. Centre punch
  2. Prick punch
  3. Dot punch

Centre punch:

• The angle of the point is 90° in a centre punch.
• The punch mark made by this is wide and not very deep.
• This punch is used for locating holes.
• The wide punch mark gives good seating for starting the drill.

Prick punch:

• The angle of the prick punch is 30°.
• This punch is used for making light punch marks needed to position dividers and trammels.
• The divider leg will get proper seating in the punch mark.