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Moving-iron voltmeter and ammeter (two movements) by the Record Electrical Co. Ltd.

Moving-iron voltmeter and ammeter (two movements) by the Record Electrical Co. Ltd.

1920
Moving-iron voltmeter

Moving-iron voltmeter

"Megger" moving-iron voltmeter

"Megger" moving-iron voltmeter

Moving-iron voltmeter

Moving-iron voltmeter

Moving iron voltmeter by Evershed & Vignoles

Moving iron voltmeter by Evershed & Vignoles

Moving-iron voltmeter serial no.B3945 made in England by Ferranti

Moving-iron voltmeter serial no.B3945 made in England by Ferranti

1950-1974
Portable moving iron voltmeter, 12V+120V ranges, with one attached lead, in fitted case, 1925-49.

Portable moving iron voltmeter

1925-1949
Moving-iron a.c. recording voltmeter no.71159, made in England by Elliott Bros (London) Ltd, speed 1 inch per hour, range 180V to 260V(lacks pen)

Moving-iron a.c. recording voltmeter no.71159

1950-1969
Portable moving iron voltmeter, 18V+180V ranges, with one attached lead, in cardboard box, 1925-49.

Portable moving iron voltmeter

1925-1949
Moving-iron a.c. recording voltmeter no.71159, with dashpot oil and inks, made in England by Elliott Bros (London) Ltd, 1950-1969. Speed 1 inch per hour, range 180V to 260V(lacks pen)

Moving-iron a.c. recording voltmeter no.71159

1950-1969