Perform Precision Measurements

Question 1

What kind of measuring instruments is used to measure the runout of an aircraft engine crankshaft?

Answer 1

A dial indicator.

Question 2

What measuring instruments are used to measure the fit between a rocker arm shaft and its bushing?

Answer 2

The outside diameter of the shaft is measured with a micrometer caliper. The inside of the bushing is measured with a telescoping gauge and the same micrometer caliper.

Question 3

In what increments can a vernier micrometer caliper be read?

Answer 3

One ten thousandth (0.0001) inch.

Question 4

What is an advantage of a vernier caliper over a micrometer caliper?

Answer 4

The range of a vernier caliper is far greater than that of a micrometer caliper.

Question 5

What precision tool is used to measure piston ring side clearance?

Answer 5

Thickness gage.

Question 6

What precision tools are used to measure the inside diameter of a cylinder?

Answer 6

A telescoping gage and a micrometer caliper.

Question 7

What precision tools are used to measure the inside diameter of a small hole?

Answer 7

A small hole gage and micrometer caliper.