Question 9
Measurement and UnitsThe inner diameter of a small test tube can be measured accurately using a
- A.micrometer screw guage
- B.pair of dividers
- C.metre rule
- D.pair of vernier calipers.
Show the answer and explanation
Answer: D (pair of vernier calipers.)
Explanation
Vernier calipers have inside jaws for internal diameters and read to 0.01 cm; a micrometer screw gauge cannot reach inside a tube.