From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Instruction to produce six 'Glowray' Ballast resistance units as per drawing DW.296.
| Identifier | ExFiles\Box 163\6\ img304 | |
| Date | 28th June 1937 | |
| To HPS{Horace Percy Smith - Experimental Factory Mgr} c. to Wst/RS.{Sir Henry Royce's Secretary} 6016 Wst/RC.{R. Childs}8/JH.28.6.37. re "Glowray" Ballast reistance units. Will you please instruct for six ballast resistance units to be made as per drawing DW.296. These are required to match up with six coils which are being produced. Wst/RC.{R. Childs} | ||