Question

The number of divisions on the head scale of a screw gauge of least count 0.01 mm with a pitch of 1.2 mm is ___________.

• A. 100
• B. 120
• C. 12
• D. 1.2

Answer 1

The correct option is B 120

Pitch of the screw gauge $P=1.2mm$

Least count $L.C=0.01mm$

So, number of divisions $N=\frac{P}{L.C}=\frac{1.2}{0.01}=120$ divisions