Hardware Detail

Item Reference:	HW0651
Machine Type:	"Duo" Relay	Serial Number:
	"Duo" (or Post Office Type) Relay
	These relays were used to switch higher currents than wire contact relays, and were used in the same ranges of hardware. They are similar to the relays used in the same era by the UK Post Office for telephone switching. This example is missing its armature.
Date of Origin:	1950s	Donor:
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Location:	On Display - HLG46	Commissioned By: Museum	Until: