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).
The design and mock-up of an electrically operated Bofors anti-aircraft gun sight.
| Identifier | ExFiles\Box 175\1\ img018 | |
| Date | 16th September 1941 | |
| To Rm.{William Robotham - Chief Engineer} c to Ev{Ivan Evernden - coachwork}/Wgw. c to Rm{William Robotham - Chief Engineer}/Wgw. c to Rm{William Robotham - Chief Engineer}/HH. c to Rm{William Robotham - Chief Engineer}/RC.{R. Childs} Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames}1/JH.16.9.41. GUN SIGHTS (BOFORS A.A. Gun.). We attach to Rm{William Robotham - Chief Engineer}/HH's copy the original of - PL.856 2 sheets, Motor transmitter and sight slide Bofors A.A. Gun. Sheet 1 of the above scheme shews a mock up made in wood, to enable the electrically operated sight to be demonstrated. Sheet 2 shews the electric motor reduction gears and sight slide. The reduction gears are Meccano pieces and available. Rm{William Robotham - Chief Engineer}/Childs has ordered these. Will Rm{William Robotham - Chief Engineer}/HH. please detail the sight slide and the attachment to the mock up with the least possible delay as it is important that this scheme should be working by Wednesday 17th. Sept. Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} Original to Rm{William Robotham - Chief Engineer}/HH. Prints to Ev.{Ivan Evernden - coachwork} Rm{William Robotham - Chief Engineer}/HH. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} Ashby. | ||