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Reading Measuring Tools

Reading Measuring Tools. Original Power Point Created by Scott Sommerlatte Modified by Georgia Agricultural Education Curriculum Office May 2007. Objectives. Why do we use measuring tools?. What tools will we use?. How do we read measuring tools?. Where are these tools used in industry?.

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Reading Measuring Tools

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  1. Reading Measuring Tools Original Power Point Created by Scott Sommerlatte Modified by Georgia Agricultural Education Curriculum Office May 2007

  2. Objectives • Why do we use measuring tools? • What tools will we use? • How do we read measuring tools? • Where are these tools used in industry?

  3. Activities • Make measurements with dial calipers, • and micrometers • Complete a worksheet on measuring tools

  4. Why do we use measuring tools? To ensure accuracy • Measuring “jigs” before starting a job • While working on a job • To check dimensions after completing a job

  5. The Tools Dial Calipers Micrometers

  6. Calipers • 0” – 6” , 0” – 12” , 0” – 36” • Accuracy of .001” • Used on precision jobs • Measures Outside Diameters, Inside Diameters, • And Depths

  7. Parts of the calipers clamp screw nibs bar dial jaws

  8. What are the 5 parts of the caliper ? • Dial • Jaws • Nibs • Bar • Clamp Screw

  9. Reading Calipers • Each increment on the bar represents .100” • Each round on the dial equals .100” or .200” • Depending on the brand of the tool • Bold numbers on the dial represent .010” • Small dashes equal .001”

  10. Micrometers • Accuracy of .0001” • Most accurate • Available in various sizes, from 0” – 1” up to 35” – 36” • Used to measure Outside Diameters

  11. sleeve thimble anvil spindle frame Parts of the micrometer

  12. What are the 5 parts of the micrometer ? • Frame • Thimble • Sleeve • Spindle • Anvil

  13. Reading the micrometer

  14. Smallest Measurement Largest sleeve reading 0 1 2 3 4 5 6 7 8 9 15 18 0 1 2 3 17 0.341 inches One mark past largest sleeve reading 16 15 14 13 Thimble Reading An Example 19 18 17 16 0.000 15 14 13 0.300 0.025 0.016

  15. Digital Calipers and Micrometers

  16. Digital Calipers and Micrometers • Serves the same purposes as conventional • Calipers and micrometers • Easier to read due to digital read-out • Usually more expensive

  17. Where are these tools used ?

  18. construction Automotive Machine Shops Any Others ?

  19. Get out a sheet of paper . . . Measuring Tools Quiz

  20. Name the following tools : 1. 2.

  21. 3. What are the three things calipers are • used to measure? • 4. Why do we use measuring tools?

  22. Name this tool: 5. 6. What is one job that uses measuring tools that we discussed?

  23. BONUS ! ! • Name the 5 parts of the calipers . • 1 point each • Name the 5 parts of the micrometer . • 1 point each

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