Photo-electric Colorimeter with a voltage transformer. The colorimeter consisting of a lamp 1900-1980
Black plastic rack contraining nine slides of blue glass ('Lovibond glasses') in increasingly dark tints 1940-1958
Duboscq colorimeter by Bausch and Lomb, c1950 in box with separate light source and transformer Duboscq colorimeter by Bausch and Lomb
Concentration colorimeter, model 222, by Evans Electroselenium Ltd., British probably c. 1975, with plastic cover Concentration colorimeter 1970-1980
Colorimeter, Crista, with two cuvettes, with four spares Colorimeter, Crista, with two cuvettes 1900-1980
Photo Electric Cororimeter, with d'Arsonval Galvanometer No.131895, with instruction Book & Galvanometer Test Certificate. Colorimeter no.23713 Photo Electric Cororimeter 1900-1980
Bausch & Lomb Spectronic 20 colorimeter/spectrophotometer type 33.29.40, serial no. HD3793 c. 1965 Bausch & Lomb Spectronic 20 colorimeter/spectrophotometer type 33.29.40 circa 1965
Lumetron colorimeter model 402E by Photovolt Corporation, New York Lumetron colorimeter model 402E by Photovolt Corporation 1970-1975
Klett colorimeter by J. Swift, London, with accessories, in box, serial no. 18693, c. 1900 Klett colorimeter by J. Swift circa 1900
Colourimeter with 4 cuvettes and 8 filters, made by Biochemistry Department, University College, London, 1950s Colourimeter with 4 cuvettes and 8 filters 1950-1960
Harrison-Shirley Digital Colorimeter HSDC-A001, made in England for Shirley Developments Ltd, Manchester, England Harrison-Shirley Digital Colorimeter HSDC-A001 1970-1979
Stiles Colorimeter, optical instrument for measuring colour matching functions, 1950-55 Stiles Colorimeter
Colorimeter patented 1928 by Klett Manufacturing Co. Inc., New York, in fitted wooden box, plus separate box of 60 colour slides Colorimeter patented 1928 by Klett Manufacturing Co. Inc.
Early model of the Guild trichromatic colorimeter, made by Adam Hilger Ltd., London, England (eye-cap missing) Early model of the Guild trichromatic colorimeter
Tintometer, in case, J.W. Lovibond, Salisbury, no.1398a, with one spare case of tinted glass slides Tintometer, in case
Photoelectric Colorimeter EEL, with set of filters and matched test tubes Photoelectric Colorimeter EEL 1900-1980
Photometer, Zeiss Pulfrich, No.72367. Consisting of 4 basic parts, lamp, with lamp-holder with 2 lenses & 4 diaphragms. The second part consisting of 2 fluid container holders, one with a small hood. The third part is of unknown purpose consisting of base, stem and upper holder with spring clips. The fourth part consists of the colorimeter with comparator with scales, eyepieces. There is also present three rods with screw ends to form supports from a base. Made in Germany Photometer, Zeiss Pulfrich 1900-1980
Reflectance Colorimeter. With manual of instructions, serial no.808678, model no.5552 Reflectance Colorimeter. With manual of instructions 1900-1980
EEL Photoelectric colorimeter wooden box for glass tubes, containing three tubes EEL Photoelectric colorimeter wooden box for glass tubes 1900-1980
Tintometer, 1886, comprising optical instruments with hinged reflector, hinged stands (2), blocks, 300 standard glasses and cells Tintometer, 1886, comprising optical instruments with hinged reflector 1886