US Patent: 573,682
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| Spirit-Level and Plumb
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Patentee:
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| William M. Morton (exact or similar names) - New Haven, CT |
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Patent Dates:
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| Applied: |
Feb. 03, 1896 |
| Granted: |
Dec. 22, 1896 |
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Patent Pictures:
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Ralph Brendler
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Description: |
| This level uses vials mounted on pivoting frames, with screw adjustments on the end of each vial. This allows fine adjustment of the level bubbles.
It is not known who actually manufactured these levels, but known examples are marked "ROLLIS" with the patent date. |
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