Woman worker testing gyro instrument rotor for aircraft, Ternstedt Manufacturing Division plant
View of a woman testing the rotor of a gyro instrument for aircraft at the Ternstedt Manufacturing Division factory. Label on back: "The most exacting and precise test given a part in the manufacture of gyro horizon and directional gyro indicator instruments for aircraft is shown here. The key factor in a gyro instrument is the rotor, a wheel which spins at 12,000 revolutions per minute. Each rotor, a tray full of which is shown at the girl's right, must be absolutely balanced, or in other words it cannot be heavier in any one part of its circumference than in another. In this test the girl puts each rotor through a strobometric weight inspection. If the rotor is slightly heavier in any one part or side, this is revealed by the strobometer and the girl then uses the drill press at the extreme left to drill just enough of a hole in the rotor to eliminate the extra weight. By this means the rotors are balanced to an accuracy of one one-hundred thousandths of an ounce-inch. This test is perhaps the most amazing of countless tests and checks given every part in each instrument being built in a Ternstedt plant of the Fisher Body Division of General Motors Corporation. From W.S. McLean, Fisher Body Division, General Motors Corporation, Detroit, Michigan. Note editor: This photo and caption have been reviewed by the War Department." Stamped on back: "Fisher Body Photographic, 3-258 General Motors Bldg., Detroit, Mich." Handwritten on back: "Women workers."
- Creator:
- Fisher Body Photographic
- Resource ID:
- na040205
- Subject:
- Women aircraft industry employees
- Aeronautical instruments--Testing
- General Motors Corporation. Fisher Body Division
- Automotive Council for War Production--Archives
- Photographic prints
- Date:
- 1942-1945
- Format:
- 1 photographic print ; 8 x 10 in.
- Department:
- National Automotive History Collection
- Location:
- MS84/Automotive Council for War Production, Women workers, 90:5
- Negative Number:
- 7000-499R
- Copyright:
- Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.