Question

What is the pitch of a screw gauge?
A. Translation distance covered in one rotation of the screw.
B. Angular distance covered in one rotation of screw.
C. Angular distance covered in half a rotation of screw.
D. None of the above.

Answer 1

Hint:Pitch of a screw gauge is the distance moved by spindle per revolution.
The screw gauge is an instrument consisting of a U shape metal frame having a hollow cylinder attached to one end of the frame and on the cylinder parallel to the axis of the screw a scale in millimeter is graduated known as the pitch scale.

Complete step by step answer:
Screw gauge is generally used to measure the dimensions of very small objects of up to one by hundredth millimeter.
There are basically two parameters which we calculate in a screw gauge one is pitch and other is least count here we have to explain pitch.
Pitch of a screw gauge is generally measured by moving the head scale over the pitch scale so as to complete the one full rotation or we can say that the distance moved by the tip of the screw when we will rotate its cap with one complete revolution.
Screw gauge formula is:
Pitch of the screw gauge is equal to the distance moved by the screw is divided by the numbers of full rotations given.
Therefore the pitch of a screw gauge is the angular distance covered in one rotation of screw.
Hence the correct option is B.

Note:The screw gauge works under the principle that when a screw gauge is rotated in a nut then the distance moved by the tip of the screw is directly proportional to the number of rotations.