Internal Measuring Tools

Starrett precision hand tools have been the standard for high quality dimensional measuring tools since 1880.

Internal measuring tools.

A protractor is also a type of compass but it has only 180 degrees whereas a compass a 360 degrees rotation. One arm has a pointed end and the other holds a pencil. Try to step back in time and imagine a world without measurement tools. Machining precision measuring gauges blocks and standards inside micrometers.

An inch was the width of a man s thumb a hand was literally meant five fingers across a span was the length of an outstretched arm and the yard in the 12th century was the distance from king henry i s nose to the thumb of his. Digital caliper adoric 0 6 calipers measuring tool electronic micrometer caliper with large lcd screen auto off feature inch and millimeter conversion 4 4 out of 5 stars 5 693 9 99 9. A compass is a measuring tool with a hinged set of arms. Electronic and mechanical inside micrometers measure internal dimensions like internal diameters in 1 increments to 0 0001 accuracy and 50 millionths 0 00005 resolution.

Electronic three points internal micrometer 12 inside bore gage micrometer 2 inside groove micrometer 4. Precision measuring tools inside micrometers sort filter. Micrometers when accuracy greater than or equal to 0 001 is required the micrometer is usually the tool for the job. Most people have only used this tool to draw circles but it can also be used for measuring angles.

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