US Patent: 386,589
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| Micrometer Scale
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Patentee:
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| Edmund Jones (exact or similar names) - Cold Spring Harbor, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 25, 1887 |
| Granted: |
Jul. 24, 1888 |
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Joel Havens
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Description: |
| This invention relates to an improvement in scales for measuring or plotting distances, in which fractions of the unit of the scale are determinable by means of an auxiliary movable gage having a scale for determining the extent of its movement.
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