US Patent: 1,345,071
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Measuring Device
Gauge for Measuring Diameter
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Patentee:
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| Nathan C. Butler (exact or similar names) - Cleveland, OH |
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Patent Dates:
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| Applied: |
Jun. 02, 1916 |
| Granted: |
Jun. 29, 1920 |
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Patent Pictures:
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Ralph Brendler
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Description: |
| This tool uses basic geometry to measure the diameter of a a pipe or other round object. The gauge is positioned such that it contacts the pipe at threee points, and the diameter can be read directly from a scale.
Known examples are marked with the inventor name and patent date, as well as the text "PIPE GAUGE" |
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