High voltage indicator (for checking whether a transmission line is live) model no. 1 serial no. D80003 by Ferranti, for earthed neutral systems 3kV to 11kV, two range with electrostatic meter reading 5kV or 11kV, with attached earth lead and polythene insulated extension rod, in fitted wooden case, probable date 1974.
- Electricity Supply
- Object Number:
case, overall: 160 x 900 x 230 mm
- high-voltage indicator
- Unknown source
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