US Patent: 420,242
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| Plumb Level
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Patentee:
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| Carl Emil Nielsen (exact or similar names) - Salt Lake City, UT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 30, 1889 |
| Granted: |
Jan. 28, 1890 |
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Russ Allen.
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Description: |
| More correctly described as a compass level that has a removeable compass and an level indicator in the form of a weighted metallic level indicator that dispenses with using a more expensive fragile glass spirit level. |
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