| US Patent: 559,820 
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| Micrometer Gage | 
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| Patentee: |  |
 | John T. Slocomb (exact or similar names) - Providence, RI |  
 
 
 
 
 
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| Patent Dates: |  
| Applied: | Nov. 19, 1894 |  
| Granted: | May 12, 1896 |  USPTO (New site tip)
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                        Russ Allen.
 
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| Description: |  | Four features: improvement in adjusting for wear by using a two piece adjustable nut with internal threads and teeth on one face to engage the teeth on the other; improvement in adjusting wear to the anvils; a scale that allow both decimal and fractional readings; "I" frame cross section. 
Known example is marked with the Mfg name and patent number. |  |