US Patent: 886,333
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| Attachment for Levels
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Patentee:
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| David H. Southward (exact or similar names) - Pittsburgh, PA |
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Patent Dates:
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| Applied: |
Jul. 18, 1907 |
| Granted: |
Apr. 28, 1908 |
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Patent Pictures:
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Joel Havens
Martin J. Donnelly Antique Tools
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Description: |
| H. C. Evertt & Co. - patent attorneys
This invention relates to attachments for levels, straight edges, and similar instruments, the invention having for its primary object to provide an attachment for determining the angularity or inclination of a level with respect to a horizontal plane.
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