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Dual vision spectrometer on metal stand

1850-1924

Spectrometer, fitted with replica of Rowlands grating

1905-1907

Large goniometer and spectrometer with heating apparatus and two thermometers

1880-1885
Hilger-Watts spectrometer plus power pack, instructions and accessories (sample holders, quartz)

Hilger-Watts spectrometer plus power pack

Large spectrometer made by E.R. Watts and Son (1921), dismantled into four parts as follows:

Large spectrometer made by E.R. Watts and Son (1921)

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
Absorption spectrometer by Schmidt & Haensch, Berlin, owned by Dr. A. Bruce, Edinburgh, 1890-1910

Absorption spectrometer by Schmidt & Haensch

1890-1910
Three-prism spectrometer by John Browning, London, in fitted wooden case, marked "Brit. Mus. (NH)/Min: Dep:/No.1

Three-prism spectrometer by John Browning

1870-1940