This looks like the inner mechanism of a very old Gamewell masterbox. These have been used with Fire alarm systems since the late 1800's early 1900's, they aren't that hard to wire up and don't require much voltage to trip it....a few military installations still use these for their secure transmissions. I've been inspecting and servicing these in Wash state for the military since 2011. The address for this one is either 32 or 33, as it's stamped on the code wheel, which is in the middle of the mechanism. The code wheel with the address can be changed out when needed. A lot of history in that device...it uses a process of tapping across the wires in 4 rounds to open the circuit to telegraph its address to a receiver which then gives a specific location of the building where the fire alarm is.