US Patent: 360,536
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| Leveling Instrument
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Patentee:
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| Thomas J. Megown (exact or similar names) - Beaver Falls, Beaver County, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Aug. 05, 1886 |
| Granted: |
Apr. 05, 1887 |
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Joel Havens
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Description: |
| Claim:
In a level, the combination, w ith the frame or case having open sides, of the continuous open tube containing the leveling-liquid secured in said frame and forming a rectangle, the vertical short portions or ends of which are transparent and provided with a graduated scale thereon, and the top pipe with a valve or three-way cock |
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