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Divided object-glass micrometer by George Dollond, London, part of refracting telescope (1987-722) by Simms (RAS No.30, Sheepshanks No.4) Presented to the Royal Astronomical Society in 1857 by Miss Ann Sheepshanks sister of the Rev. Sheepshanks. Later in 1957 given to the British Astronomical Association.
Case for divided object-glass micrometer by Dollond, London, part of refracting telescope (1987-722) by Simms (RAS No.30, Sheepshanks No.4)
Divided object-glass micrometer by Dollond, London, part of refracting telescope (1987-722) by Simms (RAS No.30, Sheepshanks No.4).
