US Patent: 1,422,231
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| Combined Level, Plumb, Square, and Measure
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Patentee:
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| James Stanley (exact or similar names) - New York, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 04, 1920 |
| Granted: |
Jul. 11, 1922 |
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Ralph Brendler
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Description: |
| This tool encloses a toroidal level tube in a perfectly square casing, allowing the level to reference any side of the case. In addition, each side is marked out in inches, and a lip is provided on one edge to allow the tool to be used as an inside or outside square. |
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