National Geographic : 1943 Oct
He's looking for a U-boat... in the sky! ROARING OUT OVER THE ATLANTIC, a huge Navy Patrol Bomber heads for a tiny patch of ocean . . . the spot where an enemy U-boat is reported to be lurking. How will the fliers find it? Not by looking at the water... but at the sky! Through a bulging blister on the plane, one of the officers points a strange-looking in strument at the sun or a star. It's called a sextant. Attached to it is a highly-precise naviga tional time and stop watch. The sextant will give him the altitude of the sun or star. The watch will tell him the time down to a fraction of a second. When he snaps a trigger, both of these measurements will be recorded, instantly! To gether, they'll enable him to plot an arrow-straight course to the objective. Once it took two men to do this vital job. But the Hamilton navigational time and stop watch-the first of its kind built in America-enables one man to navigate a plane swift ly and accurately. Hamilton workers are now fully engaged in building the navigational time and stop watch and many other preci sion timepieces for our armed forces. And though few Hamil- tons can now be made for civil ians, this wartime experience promises a postwar Hamilton that will more than earn the title: "The Watch of Railroad Accuracy." Buy U. S. War Bonds Now-Help America Win on Time! COPR. 1943 BY HAMILTON WATCH COMPANY HAMILTON makers of The Watch of RailroadAccuracy NOW MAKING ACCURATE WAR TIMEPIECES f... I.