Question

Explain the terms - (a) Pitch. (b) least count of screw gauge.

Answer 1

Answer:

Here is your answer,

(a) The pitch of the screw is the distance moved by the spindle per revolution or it is the axial distance between adjacent threads on a screw.

(b) Least count of a measuring instrument is the smallest and accurate value the instrument can measure.  Least count=pitch/number of division of thimble.

In case of screw gauge  ,

5/50=0.01 mm.

there fore least count is 0.01mm or 0.001 cm.

hope it helps you...

(refer to the clip for detailed sketch of screw gauge)