"time microscope" for adjusting watches. The Hamilton Company in War Work When the United States found itself involved in World War II, the American watch companies were asked by the military and naval authorities to turn as much as possible of their facilities over into making a great variety of small

Ages Britten—Old Clocks and Watches, 7th Edition Dreppard—American Clocks and Clockmakers Eckhardt—Early Pennsylvania Clocks Eckhardt—Pennsylvania Clocks and Clockmakers Magee—Grandfather Clocks, Their Making and Makers in Lancaster County Moore—The Old Clock Book Nutting—The Clock Book Palmer—The Book