Three tap wrenches: 7/16", 1/2" and 5/8" across square

Made:
1850-1857 in Manchester urban district
maker:
Joseph Whitworth and Company Limited

Three tap wrenches each for a set size of tap tang, one for taps 7/16" across square,1/2" and 5/8" across square.

Details

Category:
Hand and Machine Tools
Object Number:
1857-8 Pt5
Measurements:
overall-largest: 1.4173 x 27.9528 x 1.6142 in.; 36 x 710 x 41 mm
type:
screwing tackle
credit:
Joseph Whitworth and Co.