T&N -Telefonbau und Normalzeit – Master Clock – 6 x 13 x 35 in. (15 x 33 x 90 cm)
This example of a T&N (Telefonbau und Normalzeit) electric master clock could have been manufactured in the 1960s or 70s. It has a blue enamelled steel case with a fully glazed door. The clock will drive a number of alternating polarity, one minute slave dials.
The escapement is a good quality dead-beat, and the 3/4 second pendulum rod is of wood with a spun brass bob. There is a seconds subsidiary dial.