US Patent: 205,543
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| Improvement in Compasses
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Patentees:
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| Thomas H. Grigg (exact or similar names) - West Meriden, CT |
| George G. Stillman (exact or similar names) - Westerly, RI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 22, 1878 |
| Granted: |
Jul. 02, 1878 |
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Ralph Brendler
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Description: |
| This patent covers a new kind of screw-adjustment for a compass. The screw actuates a cam that engages a pin in each leg, allowing very fine movement. |
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