The reading indicated on the micrometer scale shown in the illustration is .9680 inches. Which of the figures listed represents this reading? See illustration GS-0081.
• How to read a 0–1 inch micrometer: sleeve (barrel) for tenths and 0.025-inch marks, thimble for thousandths • How a vernier scale on the sleeve is used to read ten‑thousandths (0.0001 inch) • Breaking 0.9680 inch into sleeve reading + thimble reading + vernier reading
• If 0.9680 inch is just under 1.0000 inch, about how many full tenths of an inch should you see clearly on the sleeve? • After you decide which sleeve mark gives you the largest value less than 0.9680, how many thimble divisions (0.001 in each) are needed to reach 0.9680? • Since the last digit is 0 in 0.9680, what does that tell you about which vernier line should coincide with a thimble line?
• Confirm which figure’s sleeve scale shows a value slightly less than 1.000 inch and closest to 0.9680 • Check that the thimble number adds the correct thousandths to reach 0.968 (from the sleeve value you chose) • Verify that the vernier ‘0’ line (for the 0.0000 part) is the one that lines up exactly with a thimble graduation
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