Maker and Role
Marconi's Wireless Telegraph Company Limited, Manufacturer
Rectangular grey painted metal casing with ridge along top and vents on either side. At one end is the control panel which features: 6 black fuses (3 have a green plate behind them); 2 silver fuses; 1 dial; 1 switch; and a volt meter (square and marked with "MODEL 225 / MOVING IRON / GRADE I / USE EXT. / RES. / SER. NO. 158809". Above the control panel is an attached plate marked "REGULATED POWER SUPPLY UNIT / TYPE B.D. 629D". Control panel is black with white writing, while plate is black background with silver writing. At other end of object is a circular black mesh vent, and a black panel featuring 3 silver circular power inputs.
Signature/Marks and Type
MODEL 225 / MOVING IRON / GRADE I / USE EXT. / RES. / SER. NO. 158809 Maker's Mark
REGULATED POWER SUPPLY UNIT / TYPE B.D. 629D Maker's Mark
Marconi's Wireless Telegraph Company Limited. Television Equipment [Power Supply Unit], F2075.2004. The Museum of Transport and Technology (MOTAT).