US Patent: 833,699
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Plumb Bob
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Patentee:
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Laroy S. Starrett (exact or similar names) - Athol, MA |
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Patent Dates:
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Applied: |
Feb. 07, 1906 |
Granted: |
Oct. 16, 1906 |
USPTO (New site tip) Google Patents
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Joel Havens "Vintage Machinery" entry for L. S. Starrett Co.
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Description: |
Slender, mercury filled bob with a notch on the body to allow the cord to be wrapped around the body and be attached to the center.
Produced by Starrett as their No 87 Plumb Bob.
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