US Patent: 312,266
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| Rod-Plumbing Level
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Patentee:
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| William Gurley (exact or similar names) - Troy, NY |
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Patent Dates:
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| Applied: |
Oct. 07, 1884 |
| Granted: |
Feb. 17, 1885 |
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Ralph Brendler
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Description: |
| This level features two vials on a hinged plate, allowing it to be attached to a surveying rod to level in two directions at once. Gurley was a well-known maker of surveying tools from this time, so I assume it was produced by them.
Known examples are made of bronze, and marked with only the patent date. |
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