🔍 Key Concepts

• How to read the main (sleeve) scale on an inch vernier micrometer • How to read the thimble scale and understand what each division equals in thousandths of an inch • How the vernier scale adds ten‑thousandths (0.0001 inch) by finding which lines coincide

💭 Think About

• First, determine how many full hundredths (0.01 in) are clearly visible on the sleeve to the left of the thimble edge. What base reading does that give you? • Next, see which thimble line exactly lines up with the horizontal reference line on the sleeve. What thousandths (0.001 in) value does that add? • Finally, look along the vernier scale and find the single line that lines up best with any thimble line. How many ten‑thousandths (0.0001 in) does that add to your previous total?

✅ Before You Answer

• Be sure you are reading from figure B only, not A, C, D, E, or F. • Confirm which scale is in hundredths and which is in thousandths before converting to a decimal number. • After you add sleeve + thimble + vernier values, compare all four choices and check that your total has the right number of decimal places: 0.xxx8 inch.