Reading a micrometer

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Reading a micrometer

  1. 1. Reading a Micrometer<br />Get Precise Measurements<br />
  2. 2. Small Engines Use 3 Types<br /><ul><li>Micrometer
  3. 3. Caliper
  4. 4. Depth Gauge Micrometer</li></li></ul><li>Micrometers<br /><ul><li>Measure as small as 1/10,000 of an inch (.0001 inch)
  5. 5. Different frame sizes are used to provide a wider measurement range.</li></li></ul><li>Know the Parts<br />
  6. 6. Spindle and Anvil are the contact points<br />
  7. 7. Spindle and Thimble turn together<br />
  8. 8. A micrometer caliper is read at the point were the edge of the thimble crosses the barrel scale or sleeve<br />
  9. 9. The Sleeve<br />The space between each number <br />is divided into quarters.<br />
  10. 10. Easy to read just think of the sleeve as $<br />
  11. 11. What is the measurement?<br />
  12. 12. What is the measurement?<br />$2.00 or<br />0.200 inches<br />
  13. 13. What is the measurement?<br />
  14. 14. What is the measurement?<br />$2.25 or<br />0.225 inches<br />
  15. 15. What is the measurement?<br />
  16. 16. What is the measurement?<br />$2.50 or<br />0.250 inches<br />
  17. 17. What is the measurement?<br />
  18. 18. What is the measurement?<br />$2.75 or<br />0.275 inches<br />
  19. 19. What is the measurement?<br />
  20. 20. What is the measurement?<br />$3.75 or<br />0.375 inches<br />
  21. 21. If the sleeve is dollars and quarters, the thimble is pennies<br />As the thimble rotates add the pennies to the dollars and quarters.<br />Reading the sleeve we get $3.25 or .325 inch.<br />Now add the pennies, or .001 to the sleeve measurement.<br />.326 inch<br />
  22. 22. What is the measurement?<br />
  23. 23. What is the measurement?<br />$3.75 + .10 or<br />0.385 inches<br />
  24. 24. What is the measurement?<br />
  25. 25. What is the measurement?<br />$3.00 + .04 or<br />0.304 inches<br />
  26. 26. What is the measurement?<br />
  27. 27. What is the measurement?<br />$4.25 + .05 or<br />0.430 inches<br />
  28. 28. What is the measurement?<br />
  29. 29. What is the measurement?<br />$4.75 + .12 or<br />0.487 inches<br />
  30. 30. Practice<br />Reading a micrometer gets easier with practice!<br />Try the quiz embedded in the PET MOODLE site to check your skills.<br />

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