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
Lummer-Brodhun photometer
Holophane-Edgcumbe Auto-photometer in box
Lummer Brodhun photometer head
Photometer, marked: ‘39 G’
Everett Edgcumbe auto photometer
Lummer Brodhun photometer
1900-1980
Everett Edgecumbe photometer, no. 356504
Flame photometer
One Lummer-Brodhun photometer head
Photometer, marked: ’34 G’
Wild flicker photometer
Spectro-photometer
1900-1980
Holophane-Edgecombe street lighting photometer in purpose built oak box
circa 1950
Beads for Wheatstone's photometer
Flicker photometer mounted on short metal rod
1900-1980
Modified spurge photometer.
Spurge Photometer
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
Hilger H700 Flame Photometer
Microphotometer Serial no. 206
Lowe jet photometer, c.1860.
Knobel's Astronometer
1890-1900
Autoanalyser Flame Photometer Mk III
Wheatstone type photometer
1872
M and V Photometer Model B
Letheby's Photometer
Oldham portable photometer
"Grey-Wedge Photometer"
1955
Photometer, Pulfrich, with numerous accessories and spare parts
1900-1980
Photometer made by Schmidt and Haensch
Technicolour Reflection Photometer
Heyde's Aktino-Photometer
Watt photometer by Everett and Edgecumbe
EEL flame photometer
Bunsen photometer
Filmograph photometer
Hurter and Driffield Photometer
1903
Technicolour Reflection Photometer
Apparatus for measuring the brightness of the night sky
1900-1939
Abney type colour photometer with rotating sector apparatus by Adam Hilger
1888