From the above diagram, what reading is seen on the scale of the micrometer screw gauge?
Attached Figure / Diagram
A
6.95 mm
B
5.45 mm
C
5.12 mm
D
6.88 mm
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Main scale reading = 5.00 mm
Vernier scale reading = 0.45 mm
Total reading = 5.00 + 0.45 = 5.45 mm
Source: WAEC / JAMB / NECO Classroom Archive (Record #78293)