|P.O. ENGINEERING DEPT.
Issue 1, Oct 1938
Clock No. 1
Clock No. 1 supersedes Clock No. 13 and is an 8-day, seconds-indicating,
spring driven, lever-movement timepiece with a 5-in, dial. The movement is housed in a circular
polished nickel case, with side trunnions for mounting on Brackets, Clock, Nos. 1 and 2, or 3 (Drawing PIT 81).
It is suitable for small manual telephone exchanges.
2. Winding and regulating
A Key, Clock, No. 1 is supplied with each clock for the purpose of winding and regulating the hands. To perform these operations it may be necessary to remove the clock from the mounting brackets, if access to the winding and hands arbor is from the back.
Overall diameter - 6 in.
Diameter of dial - 5 in.
Depth (back to front) - 4 in.