Measuring, Inspecting, Testing

By Machine

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These Notebooks cover only methods using machines (of greater or lesser complexity). For measuring, inspecting, and testing with hand instruments, see ../ Basic Processes -> Fitting -> Measuring, Inspecting, and Testing.)

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Hardness Testers

Bibliography for shop-made hardness testing machines.

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Optical Comparators

The Wilder Model A Micro-Projector.

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