A GOULD-TYPE LACQUERED BRASS PORTABLEPOUND MICROSCOPEUNSIGNED, SECOND QUARTER OF THE 19th CENTURYThe part-tapered tube screw-fitting at the objective end into a threaded collar positioned at the top of a square section upright cut with teeth for the rack and pinion up/down adjtment of the stage and signed Carpenter 24 Regent St. London, the platform fitted with sprung brass object retaining plate with pivoted plano-concave mirror applied beneath, the whole mounted via a threaded recessed collar onto the lid of the fitted mahogany box containing accessories including forceps, three objectives, and a condenser lens to lift-out the upper tier.27cm (10.5ins) high assembled; the box 18cm (7ins) wide, 13cm (5ins) deep.The design of the current lot was devised by William Cary during the early 1820's and was subsequently published by his former apprentice, Charles Gould, in his 1827 publication THEPANION TO THE MICROSCOPE.