Heliostat with spring driven clock drive for use with table top spectrometers by Adam Hilger Ltd. 1919
Schwarz double compensated thermocouple infrared detector made by Adam Hilger Ltd for double beam spectrometer 1950
[Records of Adam Hilger Ltd., comprising research and product development reports 1916-1941, Twyman's appointment notebook 1931 and 1933, lists of customers for various instruments 1875-1947 and notes on the history of the firm. 1 box, 9 volumes. Listing available. See also inv. no. 1999-239] Records of Adam Hilger Ltd. circa 1875-1941
Beamsplitter for 2-colour cine process; 2 separation images on one frame. One only believed made, cost over £1000. Lenses individually adjustable for aperture; focusing control; no. CT3.301/35201. Beamsplitter for Cinecolor Process
Slit width adjustable by micrometer screw, calibrated 0-50 x 0.01mm. Slit length adjustable V slider, calibrated 0-18mm. 28mm tube fitting with locking screws. Adam Hilger Limited. Hilger Adjustable Slit
Quartz and glass littrow type spectrograph by Adam Hilger Ltd., 1955-1960 used for metallurgical analysis Quartz and glass littrow type spectrograph by Adam Hilger Ltd.
Grating spectrograph by Adam Hilger Ltd., London, used by W. Jevons, 1920-1930 Grating spectrograph by Adam Hilger Ltd. 1920-1930
Biochemical absorptiometer, serial No.H627.301/46265, Adam Hilger Ltd., London Biochemical absorptiometer
Wavelength scale for quartz spectrograph, by Adam Hilger Ltd., London, England, 1920-1929 Wavelength scale for quartz spectrograph 1920-1929
Littrow mahogany cased spectrograph by Adam Hilger Ltd., London, from the laboratory of Sir Thomas Merton Littrow mahogany cased spectrograph by Adam Hilger Ltd.
Automatic spectroscope by G. and S. Merz (unsigned). Two micrometer slits in a mahogany box, drum of each divided into 100 parts. a) Sorby eyepiece in box by "A Hilger London", with position micrometer; 1 small screw missing, in mahogany box. Spectroscope is heavily constructed, height about 16", diam. of plate 12 1/2", 6 prisms, 3 eyepieces with washleather cover at eye end Automatic spectroscope by G. and S. Merz (unsigned)
Echelon spectroscope, with wave length drum (Prism and Echelon grating chipped) by Adam Hilger Ltd., London, England, 1905, comprised of two units: constant deviation spectrometer and echelon grating. Echelon spectroscope 1905
Prism interferometer (N.48) with five screw adjustment for the mirror (N.53) by Adam Hilger Ltd., London, England, 1930-1932. Prism interferometer (N.48) with five screw adjustment for the mirror (N.53) by Adam Hilger Ltd. 1930-1932
Direct vision pocket spectroscope with adjustable slit, in metal case, made by Adam Hilger Ltd., London, c.1910. Direct vision pocket spectroscope with adjustable slit 1905-1915
Early model of the Guild trichromatic colorimeter, made by Adam Hilger Ltd., London, England (eye-cap missing) Early model of the Guild trichromatic colorimeter
spectroscope; mounted on wood shaft, which has an iron girder attached to it. Also as a small screen (separated from main object). Manufactured by Adam Hilger Ltd, London. Spectroscope Mounted on Wooden Shaft
Hilger Spekker photoelectric absorptiometer Type H760, 1948 Hilger Spekker photoelectric absorptiometer Type H760
Polarimeter by Adam Hilger Ltd., London. Cast iron base, fittings mainly brass Polarimeter by Adam Hilger Ltd.
Prism spectrograph by Adam Hilger Ltd mid, London, 1930's used by Sir Harold Thomson Prism spectrograph by Adam Hilger Ltd mid
Spectrometer for visible light wavelengths by Adam Hilger Ltd., London; serial no. H56030/ 47576 Spectrometer for visible light wavelengths by Adam Hilger Ltd. 1947
Mutochrome, made by Adam Hilger Ltd. London, England, for the chromoscope Co. Ltd., with box of coloured glass discs Mutochrome, made by Adam Hilger Ltd. London
Quartz spectrograph (E.31) with case and accessories by Adam Hilger Ltd., London, 1932 Quartz spectrograph (E.31) with case and accessories by Adam Hilger Ltd. 1932
Evershed Solar Spectroscope for viewing prominences by Adam Hilger Ltd., London with wooden box (RAS No.526, Allen No.20). Presented to the Royal Astronomical Society in 1945 by Miss G.R.Allen. Evershed Solar Spectroscope for viewing prominences by Adam Hilger Ltd. 1910-1920
Two large 60 º glass prisms made by Adam Hilger Limited for the three prism Oxford Solar Spectroscope. These were replacements for the original prisms supplied in 1938 but apparently were never used as the instrument was replaced by a spectrograph using a grating. Two large 60 º glass prisms 1940-1950
Spectrum comparator, with travelling micrometer microscope by Adam Hilger Ltd., London, serial No.L1303/22216, dated 1922. Modified for measurement of circular photographic plates and thought to have been used at the University Observatory, Oxford for solar image measurements. Spectrum comparator 1922
Selection of components from the three prism Oxford Solar Spectroscope made by Casella Limited with optical components from Adam Hilger Ltd. for the University Observatory, Oxford in 1938. Parts include two large 60 º prisms, one prism stand and the collimator objective lens. Selection of components from the three prism Oxford Solar Spectroscope made by Casella Limited 1938
Spekker photo-electric absorptiometer c.1940, made by Adam Hilger Ltd. with set of light filters and set off glass cells and with galvanometer. Made by Cambridge Instrument Co. (See note) Spekker photo-electric absorptiometer c.1940, With light filters, glass cells and galvanometer 1940