What is the purpose of ratchet in a screw gauge?

The ratchet mechanism in a screw gauge ensures that the correct amount of pressure is applied to the object being measured, allowing for more accurate readings.

Role of the Ratchet:

• The ratchet mechanism is a clicking device that limits the amount of pressure applied during measurement.
• When the user turns the screw to take a measurement, the ratchet slips when the preset pressure is reached, preventing excess pressure that could distort the object or damage the screw gauge.

Purpose:

• To ensure uniformity in measurements.
• To avoid inconsistent readings due to variations in the pressure applied by different users.