Cambridge Instrument Company Ltd PH meter
1950
Cambridge pH meter
1960
Cambridge bench pH meter serial no. L334784
1940-1949
pH meter
Marconi pH meter
PH meter
1950
Cambridge Instrument Co. Ltd. pH meter
PYE pH meter
Cambridge pH meter, serial no. 24871
Open University pH meter and probe
1990-1996
Pye model 79 pH meter
Expandomatic pH meter by Beckman
1970
Pye pH meter, model 78, 1969
1969
pH meter used at Benger's Food
Portable pH meter
1979
Industrial pH transmitter
1950
pH controller model 90A (serial no. 922 98A). E.I.L.
Direct reading pH meter
1947-1960
pH meter model 7010. E.I.L., Richmond, Surrey
E.I..L. portable pH meter
pH alarm unit (high/low pH) model F.28 (serial no. 140 3588/F28 257). Made by Evershed and Vignoles Ltd
pH meter type D-449-A
Portable pH meter
Vibret laboratory pH meter (serial no.466 64A). E.I.L.
pH meter model 7020. E.I.L., Richmond, Surrey
Direct reading pH meter
pH meter
Vibron blood pH meter
Laboratory pH meter model 7030
One Beckman Model G pH meter & electrode
pH meter type D-303-B/C
pH Meter `Zeromatic'. Serial no.1477
1900-1980
Collection of instruments made by Electronic Instruments Ltd
1946-1965
Model 23A Direct reading pH meter used to monitor the pH of media
Radiometer PHM61 pH meter
1980-1989
Pye-Unicam 292 MKII pH meter with attached Electrode
PH meter
1950
Portable Camlab pH Meter, 1997
1997
pH meter
1950-1980
Cambridge Instrument Company PH meter
1936
pH meter type D-449-A, with electrodes and tray
1948
pH meter
1950
pH meter module
1960-1979
Two industrial pH meters
Industrial pH meter
pH Meter 27
1900-1980
pH Meter Type TF 717. No.R2609 dated 6.7.50
1900-1980
pH meter type D-303-B with spare dip electrode made by Muirhead and Co. Ltd.
1940-1950