Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
5th Edition
ISBN: 9780133994612
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 1RQ
Explain how a micrometer is read.
Expert Solution & Answer
To determine
How a micrometer is read?
Explanation of Solution
The micrometer is the most used instrument to measure during the engine service and repair. In a micrometer, the thimble revolves over the sleeve on a screw with 20 threads per inch. Each revolution of the thimble drives the spindle by 0.025 inches. The thimble has 25 equally spaced lines and each line represent 0.001 inches.
To read the micrometer, first read the value from the sleeve of the micrometer. Here, each reading corresponds to 0.025 inches. Then add the thimble reading the measurement. Each thimble reading represents 0.001 inches.
Add together the values from the sleeve and thimble to get the micrometer reading.
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Chapter 12 Solutions
Automotive Technology: Principles, Diagnosis, and Service (5th Edition)
Ch. 12 - Explain how a micrometer is read.Ch. 12 - Describe how to check a crankshaft journal for...Ch. 12 - List engine components that can be measured with...Ch. 12 - Prob. 4RQCh. 12 - Prob. 5RQCh. 12 - Prob. 1CQCh. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - Prob. 4CQCh. 12 - To directly measure the diameter of a valve guide...
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