"Inaudible" 1/2 minute impulse dial movement

Made:
1919-1925 in Leicester

"Inaudible" 1/2 minute impulse dial movement, patented 1919, Gent and Co. Ltd., Leicester, England, 1919-1925

Details

Category:
Time Measurement
Object Number:
1986-1552
Materials:
brass (copper, zinc alloy), copper (metal), gutta-percha, plastic (unidentified) and steel (metal)
credit:
Vaughan, D. (Dr.)