An RAF operations room wall clock** made by F.W Elliott Ltd, England (stamped to backplate). The pale cream dial has twenty-four hour Roman numerals, RAF 'King's Crown' warrant officers insignia to top centre and red, blue and yellow sector markings. With blued steel spade hands. The mahogany case has brass bevel framing glass door. Eight-day, single train movement. 45 cm diameter.

**These sector clocks were widely used during World War II to help track the movements of enemy aircraft. The position of the aircraft was recorded in conjunction with the coloured triangle segment beneath the minute hand at the time of sighting. This information was then fed back to HQ where corresponding coloured counters were then placed on a large table map of Britain overlaid with the national grid system and moved across the map by magnets, thus representing an air-raid. This enabled quicker responses to identify possible targets and launch counter-attacks.