These are three-minute periods immediately following each quarter hour reserved exclusively for making

Barometers display pressure in millibars and inches

yet is very well constructed with a durable stainless-steel frame and ergonomic aluminium overlays for comfort in use

Now Admiralty Chart 1953

Colour may vary from that shown

Aluminium Porthole Clock, 28cm BOOKS These are three-minute periods immediatelySimilar in design to our famous brass porthole clocks, the case is cast from solid recycled aluminium and polished to a mirror like finish. The face is white with black roman numerals, black hands, and a red second hand. Quartz movement uses 1x AA battery. Diameter 11".