US Patent: 350,513
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| Micrometer Calipers
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Patentee:
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| Albert L. Washburn (exact or similar names) - Boston, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 21, 1886 |
| Granted: |
Oct. 12, 1886 |
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Joel Havens
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Description: |
| My invention relates to that class of micrometers in which the measuring-screw acts in opposition to an anvil and the objects of my improvement are to provide the screw itself, instead of the anvil, with proper means for adjustment to compensate for wear, and also to provide means for obtaining a uniform pressure of the screw on the object being measured. |
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