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Muirhead-Wigan Decade Oscillator, Type D-890-A, by Muirhead &Co. Ltd., serial no. 416080, French patent no. 873458, range up to 11,111 Hz, c. 1980.

Muirhead-Wigan Decade Oscillator

1964
Environmental chamber and automatic component measuring system, type ULL-K25-A serial no. 2487-K5102, by Montford Instruments Ltd., Gorst Rd., Ealing, London, NW10, England, 1971-1980, incorporating a Pye Ether 'digi' temperature controller (effective volume of chamber about 300 mm cube, less 50 mm for electrical connectors).

Environmental chamber and automatic component measuring system

1971-1980
5KV Ionisation Tester type 732 by Airmec Laboratories Ltd., High Wycombe, Bucks, serial no. 1639, c. 1980

5KV Ionisation Tester type 732 by Airmec Laboratories Ltd.

1971-1990
Cathode ray oscilloscope type 175A made by Hewlett-Packard probably between 1960 and 1969

Cathode ray oscilloscope

1960-1969