Hassler's reflecting circle, 11-inch diameter with counterpoise stand, by Troughton, London in case, no key [RAS No.43, Sheepshanks No.17]. Presented to the Royal Astronomical Society in 1857 by Miss Anne Sheepshanks sister of Rev. Richard Sheepshanks. Hassler type reflecting circle with case. 1790-1826
Constant temperature cauldron, European, 1850-1940 Constant temperature cauldron, European, 1850-1940 1850-1940
Mechanical Veedee vibrator, by J. E. Garrett, 96 Southwark Street, London, England, 1900-1910. Mechanical Veedee vibrator 1900-1910