US Patent: 470,490
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| Draftsman's Micrometer Scale
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Patentee:
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| Edmund Jones (exact or similar names) - Cold Spring Harbor, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 02, 1891 |
| Granted: |
Mar. 08, 1892 |
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Joel Havens
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Description: |
| Clarence L. Burger - patent attorney
The object of this invention is to provide a micrometer-scale which is simpler and more compact in form, more accurate, and more convenient in use than those heretofore generally employed.
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