US Patent: 85,708
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| Improvement in Parallel Rules
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Patentee:
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| Frederick A. Traut (exact or similar names) - New Britain, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Jan. 05, 1869 |
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Ralph Brendler
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Description: |
| This patent for a parallel rule features a pair of graduated scales to allow the user to insure that the two blades are perfectly parallel.
The patent was granted to Frederick Traut, who was one of the Stanley Rule & Level company's premier inventors in the early years of the company, but this patent is not assigned to Stanley, nor was it produced by them. |
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