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Measuring tools are utilized by machinists to verify that machined parts meet the correct specification on the part drawing as well as other operational documentation. We also use measuring tools while in the process of machining to make appropriate decisions on subsequent machining step and accurate machine adjustments so surfaces and features meet specifications.
This page will be used to explain what measuring tools will be used during project 1 as well as which dimensions will be measured with the appropriate measuring tools.
Apprentices will also be assessed on the correct use and accurate interpretation of the measuring tools required for the successful completion of Project 1. Instructions on the correct method of use and interpretation of each measurement tool will also be included on the linked tool pages below.
Steel rules are most commonly used by a machinist to obtain reference dimensions for things like raw material sizes and saw cutting length. The steel rule can also provide a quick indication of straightness and provide measurements to the precision of 1/8", 1/16", 1/32", 1/64".
Dial caliper provides a measured value with the precision of .001" for outside dimensions, some inside dimensions, and some depth features.
The Outside Vernier Micrometer will provide measured values to the precision of .0001" for outside dimensions only. When used in combination with transfer gaging, some inside dimensions can be measured as well.
The dial test indicator is utilized by machinists during machine setup tasks and various inspection tasks.
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