細節
BRITISH ANTARCTIC EXPEDITION, 1910-1914
George Murray Levick's surveying and other instruments comprising:
A fine English early 20th century lacquered brass air-flow meter, by Negretti & Zambra, London No 1216, further marked on the base Lowne's Silver Medal Air Meter, the silvered dial raised on 3 turned brass pillars andgraduated 0-100 Feet, with subsidiary dials for HDS', THDS', 10THDS', 100THDS', and MILLNS', driven by an 8-bladed aluninium fan, the base threaded for the mounting bracket, in a fitted mahogany case with brass handle, printed label with manuscript insertions pasted inside cover: 'International Inventions Exhibition Awarded Siver Medal. Correction for Air Meter No. 1216 Add 30 per minute to the observed reading of the Air Meter' (paint slightly chipped on fan struts, crack on base of case) -- 8.5cm. high; [with:] 3 drawing sets, in fitted cases; An early 20th century nickel plated double-sided circular slide rule, marked on the dial Halden's "Calculex" (with a copy of Rules, Tables and Formulae for Patent Circular Slide Rule, both in fitted leather-covered case (defective); A military-pattern bakelite prismatic compass (defective); and a small Czechoslovakian early 20th century postal balance - 12.5cm. high