26th Apr, 2018 12:00

Fine Photographica & Instruments of Science & Medicine

 
  Lot 13
 

A Royal Microscopical Society Standard Thread Tap & Die Set

English, dated 1897, tap engraved 'Whitworth Manchester.8018 36ths' to one side and 'R. MIC SO LONDON 1897' to the other, die engraved '7967', in fitted leather covered case Footnote: see the report written by Conrad Beck 'The Royal Microscopical Society's standard screw-tread for nose-piece and object-glass of microscopes' JRMS 1896 P389.-92.

Sold for £936

Result plus buyers premium


 
English, dated 1897, tap engraved 'Whitworth Manchester.8018 36ths' to one side and 'R. MIC SO LONDON 1897' to the other, die engraved '7967', in fitted leather covered case Footnote: see the report written by Conrad Beck 'The Royal Microscopical Society's standard screw-tread for nose-piece and object-glass of microscopes' JRMS 1896 P389.-92.
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