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[[encircled 112]] [[double line frame around illustration]] F.I. [[image: three dimenional illustration of some type of brass jacking mechanism or instrument for raising and lowering something. Wooden handled crank (M) connected to a toothed ratchet mechanism with locking screw (F) with maker's name "H. PYEFINCH.LONDON" on the crosspiece (C). F 2 [[image: side view of a round fitting (D)]] F.3 [[image: detail of the brass, toothed ratchet blade]] F.4 [[image: detail of a round brass fitting (X)]]
Transcription Notes:
It is a vacuum pump, with the glass globe missing from base-plate "P."
https://bid.tennants.co.uk/m/lot-details/index/catalog/297/lot/438430?url=%2Fm%2Fview-auctions%2Fcatalog%2Fid%2F297%3Fpage%3D5 -mandc