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Published byLucas Fletcher Modified over 8 years ago
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Original Power Point Created by Scott Sommerlatte Modified by Georgia Agricultural Education Curriculum Office May 2007
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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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Make measurements with dial calipers, and micrometers Complete a worksheet on measuring tools
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Measuring “jigs” before starting a job While working on a job To check dimensions after completing a job
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Accuracy of.001” 0” – 6”, 0” – 12”, 0” – 36” Used on precision jobs Measures Outside Diameters, Inside Diameters, And Depths
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1.Dial 2.Jaws 3.Nibs 4.Bar 5.Clamp Screw
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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”
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Most accurate Accuracy of.0001” Available in various sizes, from 0” – 1” up to 35” – 36” Used to measure Outside Diameters
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thimblesleeve anvil spindle frame
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1.Frame 2.Thimble 3.Sleeve 4.Spindle 5.Anvil
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0 1 2 3 4 5 6 7 8 9 15 16 17 18 14 13 19 15 17 16 14 13 18 15 0 1 2 3 Smallest Measurement 0.000 Largest sleeve reading 0.300 One mark past largest sleeve reading 0.025 Thimble Reading 0.016 0.341 inches
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Serves the same purposes as conventional Calipers and micrometers Easier to read due to digital read-out Usually more expensive
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Get out a sheet of paper...
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Name the following tools : 1. 2.
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3. What are the three things calipers are used to measure? 4. Why do we use measuring tools?
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Name this tool: 5. 6. What is one job that uses measuring tools that we discussed?
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Name the 5 parts of the calipers. 1 point each Name the 5 parts of the micrometer. 1 point each
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