Gallet Flying Officer Chronograph 1940sKeeping track of time zonesThe Gallet Flying Officer was launched in 1939 as an aide to military pilots for quickly calculating changes in time zones as longitude lines were crossed. The dial is cream with dual register chronograph function and there are cities listed, by time zone, around the outer track. The hour markers are painted in radium on the inner section of the dial. The 34,5mm steel case remains in good crisp condition with original round