Some information found on the Diving Heritage site:
| Manufacture: Siebe Gorman & Co Ltd |
| Date of manufacture: 1930-1940 |
| Type: 2 Diver |
| Case type: Mahogany with Gunmetal fittings |
| Description: The mahogany case is 17 inches wide and 12 inches deep and 10 inches high. The telephone unit is designed for 2 divers . The no 1 diver calls by a bell and the number 2 diver a buzzer. This allows the attendant to instantly know which diver is calling. By positioning a switch in the box the 2 divers can talk and hear one another. In order to call the attendant the diver presses on a chin button initiating the bell or buzzer. The system is powered by a series of dry cell batteries which are stored in the rear of the box. |