US Patent: 335,110
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| Micrometer Gage
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Patentees:
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| Patrick Clifford (exact or similar names) - Wollaston Heights, MA |
| Joseph Coupal (exact or similar names) - Wollaston Heights, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 04, 1884 |
| Granted: |
Feb. 02, 1886 |
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Joel Havens
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Description: |
| Our invention relates to improvements in micrometers, which are used by machinists and others who have to measure thicknesses with great accuracy. It is provided with two dead flat surfaces, between which the article to be measured is placed. The distance between these two surfaces can be increased or diminished with such accuracy that the exact thickness of the intervening object can be determined. |
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