Stores reference 6B/114. Air Ministry Barometer, Aneroid, Pocket, Mark 1. By T. Wheeler of London. Gilt or brass metal case approximately 6.5cm diameter x 2.5cm depth. Matt silvered dial with black numerals. Marked with graduations from 20 to 31 inches of mercury and zero to 13000 feet. The case has some scratches and wear but the dial is excellent and the heavy bevelled crystal undamaged. There is an adjustment screw on the underside which is also well marked with King's crown A.M.stamp, reference and manufacturer's details. Would have has a hanging 'bow' on the protruding mount but this is absent. Comes with the original velvet-lined hard leather case. A super little instrument vital to weather forecasting on an operation RAF base. Rare to find. Stock code M24692.