US Patent: 181,411
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| Improvement in Frame-Squaring Tools
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Patentee:
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| Jerome Cleveland (exact or similar names) - Tecumseh, MI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jun. 26, 1876 |
| Granted: |
Aug. 22, 1876 |
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Ralph Brendler
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Description: |
| This tool is designed to check a rectangular from for square-ness by measuring each diagonal. It features two adjustable points on a long rod, which can register two opposite corners of the frame. When both diagonals are the same length, the frame is square.
This tool also has points to allow it to be used as a trammel, but no claims are made in the patent for this feature. |
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