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Plug Keys

• 	CONTACT KEY SINGLE
  	Code:GP - 877.1
  	A brass C.P. Spring arm with press knob and two brass terminals. All mounted on bakelite base 80x55mm.

• 	CONTACT KEY DOUBLE
  	Code:GP - 879.1
  	A contact arm and three metal studs mounted on a bakelite base with three brass terminals. The centre terminal is common connection to the arm and the two other terminals are connected to the other studs.

• 	PLUG KEY, ONE WAY
  	Code: GP - 880.1
  	Two brass blocks 9mm thick with brass terminals are mounted on a bakelite base 80x55mm. Accurately tapered plug with bakelite moulded top is fitted into the hole between the blocks.

• 	PLUG KEY, TWO WAY
  	Code: GP - 880.2
  	Three brass blocks 9 mm thick with brass terminals are mounted on a bakelite base 180 x 150mm Accurately tapered plugs with bakelite moulded top is fitted into the hole between the blocks.

• 	PLUG KEY, THREE WAY
  	Code: GP - 880.3
  	On bakelite base with brass terminals.

• 	PLUG KEY, FOUR WAY
  	Code: GP - 880.4
  	On bakelite base with brass terminals.