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?
- 3.72mm
- 3.50mm
- 3.30mm
- 3.28mm
-
3.22mm
The correct answer is: E
Explanation
Micrometer screw gauge reading = Main scale reading + vernier scale reading
= 3 + 0.22 = 3.22mm