The inner diameter of a small test tube can be measured accurately using a
A
Micrometres screw gauge
B
Pair of dividers
C
Metre rule
D
Pair of vernier calliper
Verified Correct Answer: D.
Physical Principles & Numerical Solution
A vernier scale is a visual aid to take an accurate measurement reading between two graduation markings on a linear scale by using mechanical interpolation; thereby increasing resolution and reducing measurement
Source: Myschool Past Questions Archive (Record #47678)