Ritchie's photometer
1827-1856
Decoudun photometer
1800-1950
Photometer model S511 by Weston
Joly's photometer by Griffin and George Ltd.
1954-1983
Portable photometer
Holophane-Edgcumbe Auto-photometer in box
Lummer-Brodhun photometer
Lummer Brodhun photometer head
Photometer, marked: ‘39 G’
Everett Edgecumbe photometer, no. 356504
Everett Edgcumbe auto photometer
Lummer Brodhun photometer
1900-1980
One Lummer-Brodhun photometer head
Wild flicker photometer
Spectro-photometer
1900-1980
Flame photometer
Photometer, marked: ’34 G’
Holophane-Edgecombe street lighting photometer in purpose built oak box
circa 1950
Beads for Wheatstone's photometer
Components for Lowe jet photometer, c.1860.
c.1860
Flicker photometer mounted on short metal rod
1900-1980
Modified spurge photometer.
Spurge Photometer
Lowe jet photometer, c.1860.
c.1860
Simmance-Abady type Flicker photometer by Nalder Brothers & Co.
1905-1915
Knobel's astrometer
1890-1900
Wheatstone type photometer, in brass box, six cork discs with silvered beads, 1870
1870
Joly paraffin wax photometer
1875-1899
Microphotometer Serial no. 206
Hilger H700 Flame Photometer
Knobel's Astronometer
1890-1900
Wheatstone type photometer
1872
Autoanalyser Flame Photometer Mk III
M and V Photometer Model B
"Grey-Wedge Photometer"
1955
Filmograph photometer
Oldham portable photometer
Photometer, Pulfrich, with numerous accessories and spare parts
1900-1980
Heyde's Aktino-Photometer
Letheby's Photometer
Photometer made by Schmidt and Haensch
Recording comparato-microphotometer Model L900 by Rank Precision Industries Ltd.
Portable illumination photometer diaphragm type
Bunsen photometer
Watt photometer by Everett and Edgecumbe
Technicolour Reflection Photometer
Hurter and Driffield Photometer
1903