Patent model in brass of a pantoscope, invented by Charles Emmanuel of Paris, patented in America [Patent No. 45,954 January 17, 1865] and made by T. Auvray, Paris. Patent model in brass of a pantoscope 1865
Heliostat with spring driven clock drive for use with table top spectrometers by Adam Hilger Ltd. 1919
Photograph of the instruments used by the British expedition when observing the 1919 total solar eclipse in Brazil. 1919
Telescope "G10" engraved Thos Jones, Charing Cross, London, "3 1/2" O.G. body 3' 7 1/2" long 3 3/4" diam, 3 inverting eye pieces, 1 erecting eyepiece, tube with two powers, 2 dark glasses, 1 brass cap for eye end, finder 10 3/8" x 7/8", in mahogany box with key Telescope "G10" engraved Thos Jones, Charing Cross, with case 1815-1850
Gold-plated grazing - incidence paraboloidal mirror for X-ray astronomy Gold-plated grazing - incidence paraboloidal mirror for X-ray astronomy 1975-1980
Photograph showing a selection of scientific instruments from the Physical Cabinet (collection) of the Royal University of Padua, Italy. These include heliostats by Tessarolo and Silbermann, a projector by Duboscq, lamp by Carlevaris, lamp for producing Drummond's light, and regulator for an electric arc lamp. The print was supplied by Prof Rossetti for display at the 1876 Loan Exhibition held at the South Kensington Museums, London. Photograph showing a selection of scientific instruments from the Physical Cabinet of the Royal University of Padua 1876
Specimens showing results of a process, for polishing marbles etc, invented by A. Gath of Rome about the year 1825, and applied to reflectors for astronomical purposes: a) Reflector of Nero Antico b) Piece of sililian jasper agate c) Piece of green granite Erbetta d) Similar piece polished according to the old process by Frattoddi e) Disc of eleven agates as used for polishing a small reflector Specimens showing results of a process 1825
Telrad telescope finder, a naked eye sighting instrument using a magnified illuminated reticle projected onto an inclined glass plate Telrad telescope finder 1995