The following information was taken from. Army Air Force Sector Clocks The USAAF IXth Air Force operated jointly with the RAF´s 2nd Tactical Air Force in the Allied Expeditionary force from D-Day onwards, and they too used the sector method of plotting aircraft movements. They are smaller than the RAF examples, just 10 inches in diameter and 3 inches deep, with Bakelite cases. The hinges bezel has a milled Bakelite knob to the right side that screws down into a slot in the flange of the lower case. THE USE OF THE CLOCK The USAAF sector clocks were used in tracking the movements of enemy aircraft form the information gathered from observers in the field and from mobile radars.
The clock looks very different from the RAF examples but it has the same sequence of colours (red, yellow, blue) and is used in the 5-minute segments for each quarter of an hour. The Allied expeditionary Air Force was a vital supporting mobile unit operating from close behind the front line as it moved across Europe.
Its HQ´s operated from tents and the clocks were transported in oak boxes. Because these sector clocks were based on the U. Navy bulkhead clock they were moderately waterproof, which was essential in a tent-bound existence in the field in a European winter!
The item "WWII USAAF RAF Sector Clock Seth Thomas USA Bakelite Military Radio Room, 1940" is in sale since Monday, June 8, 2020. This item is in the category "Antiques\Maritime\Maritime Clocks". The seller is "procoleccion" and is located in México. This item can be shipped worldwide.