A vintage precision scientific analytical balance manufactured by Stanton Instruments Ltd of London. The instrument is designated as Model A.D.4 and was produced in England. It is housed in a glazed wooden case, likely mahogany, featuring a heavy black finished base and glass panels to the front, sides, and top. The internal mechanism is constructed from brass and polished metal, featuring a central beam with agate or synthetic sapphire knife-edge supports. The balance includes two suspended circular weighing pans and two large cylindrical air damping pots designed to stabilise the beam for rapid readings. The design incorporates an optical projection system for fine scale measurement. A white manufacturer’s plate is fixed to the upper front frame, inscribed with the text MODEL A.D.4., STANTON INSTRUMENTS LTD, LONDON, MADE IN ENGLAND, accompanied by the stylized SI logo.
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