Moving-coil voltmeter model 505 serial no.323683 by E.T.E.I. Ltd.
- Made:
- 1940 in High Wycombe
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Moving-coil voltmeter model 505 serial no.323683 by E.T.E.I. Ltd. (Ernest Turner Electrical Instruments Ltd.), High Wycombe, England, fitted with rectifier and scaled 0-25 V a.c., also marked AM (Air Ministry) and dated 1940, in 2.5 inch dia. flush-mounting case
