Large hydrogen-oxygen fuel cell consisting of seven plates which have been 'exploded' to show the inner structure: 1) diaphragm of nickel-plated copper; 2) high-density polyethylene mesh; 3) electrode of microporous PVC silver plated and coated with supported platinum catalyst; 4) poly methyl meth acrylate alkaline electrolyte six normal potassium hydroxide; 5) electrode of microporous PVC silver plated and coated with supported platinum catalyst; 6) high-density polyethylene mesh; 7) outer current collector Large hydrogen-oxygen fuel cell
Light-beam oscillograph recorder, by Micro-movements Ltd., type M10-120/A, serial number 0113, without galvanometer processing circuit boards, plus inverter unit, 1976-84. Light-beam oscillograph recorder
Unipivot Versatile Galvanometer, Cambridge Resistance Meter, and D.C. Range Box, all by the Cambridge Instrument Co. Ltd., 1950-62 (see 3 stroke numbers). Unipivot Versatile Galvanometer
Cathode ray oscilloscope type 175A made by Hewlett-Packard probably between 1960 and 1969 Cathode ray oscilloscope
Two standard mica capacitors by H. W. Sullivan Ltd, capacitance 0.2 microfarads and serial no. 57227/1959, and capacitance 0.07 microfarads serial no. 57228/1959, made in 1959. Two standard mica capacitors by H. W. Sullivan Ltd