The diagram above represents a portion of a micrometer screw gauge in which the horizontal scale is in millimetres. What is the reading on the instrument?
Attached Figure / Diagram
A
3.72mm
B
3.50mm
C
3.30mm
D
3.28mm
E
3.22mm
Verified Correct Answer: E.
Physical Principles & Numerical Solution
Micrometer screw gauge reading = Main scale reading + vernier scale reading
= 3 + 0.22 = 3.22mm
Source: Myschool Past Questions Archive (Record #25198)