Photocell galvanometer amplifier type 5588 serial no.198055
Photocell galvanometer amplifier type 5588 serial no.198055, by H. Tinsley and Co. Ltd.
Photocell galvanometer amplifier, thermal compensator, and "Voltstat" constant voltage transformer (see 3 stroke numbers).
Photocell galvanometer amplifier type 5588 serial no.198055, by H. Tinsley and Co. Ltd.
Thermal compensator type 5214A serial no.197898, by H. Tinsley and Co. Ltd., London, SE25, England, 1970.
"Volstat" constant voltage transformer type CV15F no.926, input 190-260 volt output 12 volt 15 watt, by Advance Electronics Ltd., Hainault, Essex