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Spectroscopes


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Spectroscope - unsigned
Lacquered brass tubes, glass prism, cast iron circular table (diameter 14.8 cm) on black painted cast iron tripod base (total height 22 cm). Collimating tube with adjustable slit. Small tube holding a graduated scale and collimating lens. Telescope tube with draw tube focusing.
Unsigned, but with the initials "UC" on the telescope tube. First half 20th century?






Spectroscope - Leybold
Lacquered brass tubes on black painted cast iron tripod base (total height: 30 cm). Collimating tube with adjustable slit; tube holding a graduated scale and collimating lens; adjustable telescope tube with rack and pinion focusing. Covered prism table with removable top.
Signed on top "E. Leybold's Nachfolger A.G. | Cöln - Rhein". First half 20th century?





Spectroscope - unsigned
Lacquered brass tubes, nickel plated brass circular table on black painted cast iron tripod base (total height 25 cm). Collimating tube with adjustable slit. Small tube holding a graduated scale and collimating lens. Adjustable telescope tube with draw tube focusing. Prism table with removable cover.
Unsigned, first half 20th century?





Hand spectroscope - R&J Beck
Lacquered brass Thorp's diffraction grating replica hand spectroscope (length 11.4 cm) and his cylindrical cardboard case.
Signed R&J. Beck LTD, ca 1930.








Hand spectroscope - R&J Beck
Lacquered brass mono prism hand spectroscope (length 10 cm / 11.5 cm when pulled out). It has an adjustable split and been used for many years for the identification and verification of gemstones by observation of their absorbtion spectrum. In its black leather covered hinged case lined with blue velvet and purple silk.
Signed “R and J. BECK. LTD | London”, early 20th century.





Hand spectroscope - R&J Beck
Lacquered brass hand spectroscope (length 10 cm) with adjusting wheel and brass screw-cap in its black leather covered hinged case lined with blue velvet and purple silk (11 cm x 6 cm).
Signed “R and J. BECK. LTD | London”






Hand spectroscope - Beck
Black lacquered hand spectroscope 20 cm long closed 21,5 when pulled out and just under 2,5 cm in diameter. As well as producing the spectrum the slit also appears as a bright line. Turning the knurled knob at the side of the instrument moves the spectrum across the field of vision whilst the bright line stays fixed. It is in his original blue velvet and blue silk fitted case
Signed: “BECK | LONDON “ early 20th century.







Hand spectroscope - J.A. Hilger
Zapon lacquered brass pocket direct vision spectroscope in its plush-lined leather-covered case (16 cm x 6 cm), with adjusting wheel and brass screw-cap.
Signed "J.A. Hilger | London", pre 1892 (after 1892 the country of origin was stated).







Hand spectroscope - J.A. Hilger
brass pocket prism spectroscope (Closed: 90 mm, open 115 mm) in its brass case (100 mm x 18 mm), said to have been used by the artist “C HAMILTON ELLIS”
Signed ".A. Hilger | London", pre 1892 (after 1892 the country of origin was stated).







Hand spectroscope - Huet, Paris
Nickel plated brass and oxidized brass wavelength direct-vision hand spectroscope (length 9.5 cm, accessory tube 5.5 cm) and its blue plush-lined leather-covered case.
Signed "Huet | Paris | 28634", ca 1930.







Hand spectroscope - Penrose, London & Paris
Lacquered brass spectroscope, length 12 cm in its cylindrical case. One end rotates to adjust the slit. Focussing of the eyepiece is by means of a friction tube. A brass cap covers the eyepiece.
Signed "Penrose and Co. | London & Paris", early 20th century.







Hand spectroscope - Carl Zeiss, Jena
Nickel plated brass and oxidized brass hand spectroscope (length 10 cm) and its dark blue plush-lined leather-covered case.
Signed "Carl Zeiss | Jena | Nr 21200", ca 1930.







Hand spectroscope - Carl Zeiss, Jena
Nickel plated brass and oxidized brass hand spectroscope (length 10 cm) and its red plush-lined leather-covered case. The screwdriver is missing
Signed "Carl Zeiss | Jena | Nr 181136", ca 1950.







Hand spectroscope - Rayner multi-slit prism spectroscope - Gemmological Instruments Ltd
Nickel plated compact spectroscope in its plush-lined case. The outside slit (pocket spectroscope) and the inside slit (for microscope) are continuously variable. The slit is covered to prevent the entry from dust and the slit selection is achieved by turning the eyepiece, making the adjustment easily accessible when the spectroscope is inserted in the viewing tube of a microscope or in a stand.
ca. 1950-1955







Diffraction grating hand spectroscope - Rayner
Black lacquered brass hand spectroscope (length 10,5 cm) with 6 positions for the selection of the slit achieved by turning the eyepiece. in its black leather covered hinged case lined with green velvet and foam rubber
Signed: Rayner, ca 1950







Hand spectroscope - John Browning, London
Large straight-hand spectroscope (length 15 cm) made of ZAPON lacquered and blackened brass with an adjustable gap and 5 prisms; the arm is mounted on a side-mounted milled wheel and a lever connected to it. In its blue plush-lined leather covered case.
Signed “JOHN BROWNING | 63, STRAND LONDON”, and "GRACE'S SPECTROSCOPE” at the other side.







Hand spectroscope - John Browning, London
Grace’s-pattern hand spectroscope made of lacquered brass (length 10 cm) with adjustable prism via rack and pinion and turning wheel-operated draw-tube focusing in the original shaped and plush-lined leather-covered case (11 cm x 7 cm); the pale blue silk-lined lid with the gilt-tooled crest and maker's device for JOHN BROWNING.
Signed “JOHN BROWNING LTD | 138 STRAND | LONDON | 7745”, late 19th century.







Hand spectroscope - John Browning, London
Lacquered brass prism spectroscope (length 8cm, pulled out 10cm) in his leather covered tube.
Signed “JOHN BROWNING | 63 STRAND | LONDON ”, ca 1885.






Hand spectroscope - W. Watson & Sons, London
Lacquered brass hand spectroscope in its plush-lined case (11 cm x 6 cm); this model is similar to the brass spectroscope signed “John Browning” number 7745 described above.
Signed “D.V. SPECTROSCOPE MODEL 426 | W. Watson & Sons Ltd | London | 10864”






Hand spectroscope - Ernst Leitz, Wetzlar
Black lacquered brass hand spectroscope in its felt-covered case. With adjustable slit, a series of three prisms and an achromatic lens situated between the prisms and the slit. A graduated scale is projected on the prism.
Mid 20th century






Hand spectroscope - Ernst Leitz, Wetzlar
Nickel plated brass hand spectroscope in its felt-covered case. With adjustable slit, a series of three prisms and an achromatic lens situated between the prisms and the slit. Length of the spectroscope without clasps: 9 cm (extends to 11 cm).
Mid 20th century