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Hilger wavelength spectroscope, with camera, London, England, 1919

1919

Adjustable slit for use with spectroscope

The first Michelson Echelon Grating made in Europe with diffraction grating and 15 plates

1899

Spectrum comparator

1928

Hollow Prism of natural quartz with mounting lug on base

1900-1905

Heliostat with spring driven clock drive for use with table top spectrometers by Adam Hilger Ltd.

1919

Abbe Refractometer, used by Horace Dall

1918-1920

Concave diffraction grating on speculum metal

1910-1948 (estimated)

Spectroscope Mounted on Wooden Shaft

Spectro-photometer

1900-1980

Schwarz double compensated thermocouple infrared detector made by Adam Hilger Ltd for double beam spectrometer

1950

Corner cube reflector prism in brass mount

1920-1930

35-plate echelon diffraction grating by Adam Hilger Ltd.

1930

Michelson interferometer

1900-1910

Fluorite Prism by Adam Hilger Ltd.

1900-1905

left-handed quartz prism by Adam Hilger Ltd.

1900-1905

Fused Silica Prism by Adam Hilger Ltd.

1900-1905

Fused Silica Prism (compound - 4 segments) by Adam Hilger Ltd.

1900-1905

Spectroscope on stand by Hilger no 10.301/20207

1920

Liquid refractometer by Hilger, London, 1948

1948

Measuring micrometer made by Adam Hilger Ltd, 1939

1939

Glazed frame with photograph of Hilger Camera lens interferometer

1930-1932
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

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
[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
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
Biochemical absorptiometer, serial No.H627.301/46265, Adam Hilger Ltd., London

Biochemical absorptiometer

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
Littrow mahogany cased spectrograph by Adam Hilger Ltd., London, from the laboratory of Sir Thomas Merton

Littrow mahogany cased spectrograph by Adam Hilger Ltd.

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
Wavelength scale for quartz spectrograph, by Adam Hilger Ltd., London, England, 1920-1929

Wavelength scale for quartz spectrograph

1920-1929
Early model of the Guild trichromatic colorimeter, made by Adam Hilger Ltd., London, England (eye-cap missing)

Early model of the Guild trichromatic colorimeter

Muller X-ray Spectrometer, by Hilger

Muller X-ray Spectrometer, by Hilger

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

Hilger one-shot colour camera. Camera for 1/2 plates; lens missing; mirror beam splitting; circular mirror, annular mirror for left and right beams, light passing mirrors reaches plate at rear. Filters held in frames in front of plates (2 or 3 missing). Lever focuses all three plates simultaneously.

Hilger One-Shot Colour Camera

1926-1936
Made in England. Crackle painted metal body, hinged back with rack and pinion adjustments to plateholder position. No 072304/47379.

Hilger Spectroscopic Camera

circa 1919
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
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
Spectrophotometer, Adam Hilger Ltd., H16, date c. 1928

Spectrophotometer, Adam Hilger Ltd

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

Low-Hilger audiometer, including: 2 12V 48 watt projector bulbs, 5 diaphragms (one torn) on brass mounts, (in metal boxes), 2 diaphragms on wooden mounts, 1 horn and stand, 1 box of lantern slides, mostly referring to the audiometer.

Low-Hilger audiometer

1924
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
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
Spectrometer for visible light wavelengths by Adam Hilger Ltd., London; serial no. H56030/ 47576

Spectrometer for visible light wavelengths by Adam Hilger Ltd.

1947
Abbe refractometer in case by Adam Hilger Ltd.

Abbe Refractometer

Hilger wavelength spectrometer, with camera, by Adam Hilger Limited, London, 1918-1920

Hilger wavelength spectroscope, with camera

1919
Hilger Spekker photoelectric absorptiometer Type H760, 1948

Hilger Spekker photoelectric absorptiometer Type H760

Additional parts associated with Hilger wavelength spectrometer, by Adam Hilger Limited, London, 1918-1920

Additional parts associated with Hilger wavelength spectrometer

1919
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