BASIC MEASUREMENT.pdf - Manufacturing Engineering...

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Manufacturing Engineering Technician 4-1
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2 BASIC MEASUREMENT STEEL RULES
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3 STEEL RULES Always in inch or mm in machine shops (not in feet or cm or meters) Made from good quality carbon steel Example: 4140 steel nickel steel family Poor quality will rust and numbers will fade away
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What is 4140 ? Type of steel 4140 is a good quality steel 41 Chromium Molybdenum Family 40 0.40% - Carbon Content 4
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