tap

Description
Large steel tap for forming a screw thread.
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Object detail

Department
Object
Production place
USA
Signature & date
stamping:side:" PAT'D IN U.S.A./ JAN. 25. 1910" "3WR"
stamping:side:"WILEY & RUSSELL MFG. CO./ GREENFIELD. MASS./ USA/ LIGHTNING"
On inner side of tap ridges "1C10 2C10 3C10 4C__ 5C__ 6C__"
Associated person
Measurement type, part and reading
Dimensions:0 - Whole:L 12.5cm (L 4 15/16")
Dimensions:0 - Whole:W 7.7cm (W 3 1/16")
Accession number
1979-025-305

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