Example of A.T.M. (Strowger) 2-level Colliery Winding Signal Indicator
Example of A.T.M. (Strowger) 2-level Colliery Winding Signal Indicator, consisting of:- Indicator panel 3 6" gongs, 1 Central bellkey, 1 luminous indicator; 1 8" gong, 2 Rapper keys
Details
- Category:
- Mining & Ore Dressing
- Object Number:
- 1938-684
- type:
- indicator
- credit:
- Siemens Group Services Ltd.; Automatic Telephone Manufacturing Co.
