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1934 Vintage CEB Ferranti AC Test Set Comprising A Voltmeter & Ammeter In A Bakelite Case
This nice scientific curio is a 1934 CEB Ferranti AC Test Set Comprising A Voltmeter & Ammeter In A Bakelite Case. Made by Ferranti Ltd and in use at the Central Electricity Board (CEB) SWE & SW Bristol.
In pretty good cosmetic condition with a few surface scuffs and blemishes commensurate with age and use. It hasn't been tested and is being sold as a collectible.
The instrument comprises two permanent moving magnet coil instruments mounted in a single bakelite case with a metal CEB label on the exterior of the case. The inside comprises bakelite knobs which allow the voltage and current scales to be conveniently changed.
Approximate Size of the Bakelite Case: 13.8 x 5.7 x 4.9 cm
Metal Label : Central Electricity Board SWE & SW Bristol No. 41
Voltmeter
High Voltage: 100 ohms per volt; 600, 300 , 150 v
Low voltage: 10 ohms per volt ; 7.5, 15, 30 volts
Ammeter
Two Ranges: 0-5 and 0-0.5 amperes
Both meters are marked:-
A33437
Made in England
Patent no. 350380 (1930-02-01 Application filed by EDGAR HAROLD WALTER BANNER, Ferranti PLC)
BSI 25-100~
A lovely instrument suitable for any collection display of vintage meters and electricity board gadgets.
