|P.O. ENGINEERING DEPT.
Issue 3, 23.6.59
Clock No. 13 is now obsolete and is superseded by Clock No. 1 with Brackets, Clock, Nos. 1 and 2, or 3.
The clock is used on trunk exchange switchboards.
Clock No. 13 is an 8-day, seconds indicating, spring-driven, lever-movement timepiece with a 3in. dial. The movement is housed in a circular polished-nickel case.
The clock is mounted by means of the bayonet-jointed and locked angular metal case, which normally forms part of the
The clock should first be unlocked and removed from its mounting case. It can then be wound by means of the small handle projecting from the back of the movement.
Overall diameter - 3.3in.
Diameter of dial - 3in.
Depth (back to front) - 2.75in.