Micrometer Questions

The micrometer is an instrument used to measure the thickness, diameter and lengths of solid bodies. Micrometer features a C-shaped frame with a movable jaw operated by an integral screw. Various parts of a micrometer are Frame, Screw, Anvil, Barrel, Ratchet Stop, Spindle, and Locknut.

Read more: Micrometer

Important Micrometer Questions with Answers

1. Micrometer is also known as a ______.

1. Ammeter calliper
2. Galvanometer calliper
3. Micrometer screw gauge
4. Voltameter calliper

Answer: c) Micrometer screw gauge

Explanation: Micrometer is also referred to as the micrometer screw gauge.

2. The heart of the micrometer is ______.

1. The screw located within the frame
2. Anvil attached to a spindle
3. The locknut
4. The screw located within the barrel

Answer: d) The screw located within the barrel

Explanation: The screw located within the barrel is considered the heart of the micrometer.

3. The stationary round component with a linear scale on it is known as ______.

1. Spindle
2. Ratchet Stop
3. Barrel
4. Locknut

Answer: c) Barrel

Explanation: The barrel is the stationary round component which features a linear scale.

4. Frame of the micrometer is ______ shaped.

1. O
2. C
3. S
4. L

Answer: b) C

Explanation: The frame of the micrometer is the C-shaped body that holds the barrel and anvil.

5. Choose YES or NO: The micrometer is used to measure metals’ thickness.

1. YES
2. NO

Answer: a) YES

Explanation: Micrometers are a preferred tool for measuring the thickness of metals.

6. Who invented the micrometer used with a telescope?

An English astronomer named William Gascoigne invented the micrometer used with a telescope.

7. Is the spindle of the micrometer movable?

1. YES
2. NO

Answer: a) YES

Explanation: The spindle of the micrometer is moved by turning the ratchet knob or thimble.

8. State true or false: The screw is found inside the barrel.

1. TRUE
2. FALSE

Answer: a) TRUE

Explanation: The screw inside the barrel is considered the heart of the micrometer.

9. List two applications of the micrometer.

The micrometer is used in mechanical trade and machining purposes.

10. What is a locknut?

A locknut is the knurled component which can tighten to hold the spindle stationary.

Practice Questions

1. What is a micrometer?
2. What is an anvil?
3. List the uses of the micrometer.
4. List seven parts of the micrometer.
5. Define the barrel in the micrometer.