Masters of time!: at Elgin, Illinois at an observatory. A woman sifts through a pile of tiny screws with a pair of tweezers. Adjusting the watch under a magnifying glass. A machine tests the accuracy of the watch. A woman weighs incredibly tiny screws. The dial of the watch is added. Then the minutes and hour hand. The watch movement is then enclosed in a glass case, The finished watch is seen in CU.