Comparative [hydrometer] Scales, Compiled from Tables of eminent authorities ... [Card, published by Henry Baker ca.1853. "For the use of Chemists, Vinegar Makers, Brewers, Dyers, Bleachers, British Wine Makers, Publicans, Tanners, and others". Bears 34 scales for each of which is a description. Bears also, ms. note re 'Somalvico and Co.' and date 1853. Baker, of 90 Hatton Garden, London (between 1848 and 1858) was Hydrometer Maker to the Lords Commissioners of the Admiralty] Comparative Scales, Compiled from Tables of eminent authorities ... circa 1853