|Type OB 3010/150
Two-Position Floor Pattern Switchboard
Mechanically restored Jack Indicators
Local Battery System
150 metallic circuit lines.
Woodwork, polished mahogany, with the jack field covered with fibre.
Legs, enamelled cast iron.
24 x PRESS BUTTONS for restoring the clearing indicator when both plugs are in use.
2 x PILOT VISUAL INDICATORS for calling.
1 x NIGHT BELL.
2 x PILOT VISUAL INDICATORS for clearing.
3 x NIGHT BELL SWITCHES.
150 x JACK INDICATORS.
2 x RINGING VIBRATORS for supervising the outgoing ringing current.
24 x PAIRS OF CORDS with 2 point plugs.
24 x SPEAKING AND RINGING KEYS.
2 x KEYS for connecting all cord circuits to one of the operators positions.
2 x DOUBLE SPEAKING KEYS.
2 x DOUBLE RINGING KEYS for Hand generator.
2 x GENERATORS. RH 5000, 5-magnet.
2 x MICROTELEPHONES. RE 4052, with cord.
2 x DOUBLE BATTERY RINGING KEYS.
2 x POWER GENERATOR RINGING KEYS.
1 x TESTING KEY.
2 x PRESS BUTTONS for short circuiting the secondary winding of the induction coil.
2 x PRESS BUTTONS for closing the, transmitter circuit.
24 x CLEARING INDICATORS.
Approximate Weight, 253.57 lbs.
Last revised: October 08, 2019