US Patent: 41,396
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| Improvement in in Trying-Squares
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Patentee:
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| John Richards (exact or similar names) - Columbus, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jan. 26, 1864 |
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Ralph Brendler
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Description: |
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This is a very unusual design for a square. Instead of the blade being fixed
at a perfect right angle, it pivots a few degrees in each direction. It is
intended to allow a woodworker to gauge the squareness of an edge by feel,
without having to look to see if light shows under the blade.
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