CLOCK No. 37 & 43

P.O. ENGINEERING DEPT.
ENGINEERING INSTRUCTIONS
MISCELLANEOUS
TIME
B 1127
Issue 1, Oct 1938

MECHANICAL CLOCKS
Clocks Nos. 37 and 43

1. Description
”Clocks Nos. 37 and 43” are 8-day, seconds-indicating, spring-driven lever movement timepieces fitted with 5-in, dials, and are exclusively for use on “Switchboards, P.A. 101 or 150.” On “Switchboard, PA. 101,” the “Clock No. 37” only is used. The movement is housed in a circular metal case, finished black enamel. “ Clock No. 37” is designed for flush mounting, or surface mounting by means of “Bracket, Clock, No. 7,” and is illustrated in Fig. 1. “ Clock No. 43” is fitted with side trunnions for surface mounting on “Switchboards, P.A. 150,” by means of “Bracket, Clock, No. 8,” and is illustrated in Fig. 2.

Clock No. 33	Clock No. 43

2. Winding and regulating
A key is supplied with each clock for the purpose of winding, and the operations of winding and regulating the hands are performed from the front.

Last revised: May 21, 2003