Longines equipped the Siderograph with the most accurate movement manufactured at the time, placing it inside a heat-toughened aluminium case. This material was perfectly suited for aviation because ...

He is the best-known user of the Longines Siderograph, an on-board device for celestial navigation that was patented by Longines. The crew in Howard Hughes’ aircraft relied on Longines chronometer ...

"Out of the 16 pieces, there are pocket watches, steel sport counter, aerial navigation instrument (Siderograph), lady`s wrist watches and gold and guilt wrist watches with leather straps," Pramod ...