Question

What is the purpose of the spring and ratchet arrangement in a screw gauge???
Please only give me answer​

Answer 1

Answer:

It acts as a limiting device which applies pressure by slipping at a predetermined torque, thereby preventing the spindle from moving further. As the pitch of the screw depends on the rotation of the spindle. The ratchet restricts the spindle from moving more than necessary, preventing damage to the pitch of the screw.