Ritchie's photometer
1827-1856
Decoudun photometer
1800-1950
Joly's photometer by Griffin and George Ltd.
1954-1983
Photometer model S511 by Weston
Portable photometer
Holophane-Edgcumbe Auto-photometer in box
Lummer-Brodhun photometer
Lummer Brodhun photometer head
Everett Edgecumbe photometer, no. 356504
Photometer, marked: ‘39 G’
Everett Edgcumbe auto photometer
Spectro-photometer
1900-1980
One Lummer-Brodhun photometer head
Lummer Brodhun photometer
1900-1980
Wild flicker photometer
Flame photometer
Photometer, marked: ’34 G’
Holophane-Edgecombe street lighting photometer in purpose built oak box
circa 1950
Flicker photometer mounted on short metal rod
1900-1980
Beads for Wheatstone's photometer
Components for Lowe jet photometer, c.1860.
c.1860
Modified spurge photometer.
Spurge Photometer
Microphotometer Serial no. 206
Hilger H700 Flame Photometer
Lowe jet photometer, c.1860.
c.1860
Knobel's astrometer
1890-1900
Simmance-Abady type Flicker photometer by Nalder Brothers & Co.
1905-1915
Wheatstone type photometer, in brass box, six cork discs with silvered beads, 1870
1870
Joly paraffin wax photometer
1875-1899
Knobel's Astronometer
1890-1900
Simmance-Abady Flicker photometer by Nalder Brothers & Co.
1905-1915
McMurty Photometer. Extinction type meter
1914-1924
Wheatstone type photometer
1872
Autoanalyser Flame Photometer Mk III
Bunsen photometer
Oldham portable photometer
"Grey-Wedge Photometer"
1955
M and V Photometer Model B
Recording comparato-microphotometer Model L900 by Rank Precision Industries Ltd.
Photometer, Pulfrich, with numerous accessories and spare parts
1900-1980
Filmograph photometer
Heyde's Aktino-Photometer
Photometer made by Schmidt and Haensch
Watt photometer by Everett and Edgecumbe
Letheby's Photometer
Hurter and Driffield Photometer
1903