US Patent: 673,944
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| Measuring Instrument
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Patentee:
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| Jerald G. Doty (exact or similar names) - Basco, Hancock County, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 05, 1901 |
| Granted: |
May 14, 1901 |
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Joel Havens
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Description: |
| H. B. Willson & Co. - patent attorneys
This invention relates to a self indicating or registering measuring instrument, and aims to provide a simple and effective device of this character designed for use as calipers, and in addition as a gage for finding with accuracy the outside circumference of bodies and the inside circumference of circular openings.
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