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THE DEPTH GAUGE MICROMETER
V. Ryan © 2004 2021
 
The depth gauge micrometer is a precision measuring instrument, used by engineers to measure depths. Each revolution of the rachet moves the spindle face 0.5mm towards the bottom of the blind hole. The diagram below shows how the depth gauge is used. The ratchet is turned clockwise until the spindle face touches the bottom of the blind hole. The scales are read in exactly the same way as the scales of a normal micrometer (see previous information sheets).
 
 
 
 
 
QUESTIONS:
1. Draw a simple diagram representing the depth gauge micrometer and label the important parts.
2. Explain how it is used to measure depths.
 
 
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