| US Patent: 60,315 
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| Improvement in Scale Pencils | 
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| Patentee: |  |
 | Benjamin Worcester (exact or similar names) - Waltham, MA |  
 
 
 
 
| Manufacturer: |  | Not known to have been produced |  
 
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| Patent Dates: |  
| Granted: | Dec. 04, 1866 |  USPTO (New site tip)
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                        Ralph Brendler
 
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| Description: |  | This pencil features a scale engraved in the side of it, and a pair of sliding collars with marking points to allow it to be used as a marking gage or compass. |  |