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).
Specification sheet for light bulb dimensions and filaments according to B.E.S.A. standards.
| Identifier | ExFiles\Box 166\4\ img106 | |
| Date | 16th March 1931 guessed | |
| DIMENSIONS & FILAMENTS TO B.E.S.A. STANDARDS. FORM. A.{Mr Adams} 50 M/M 72 M/M 30 M/M FORM. C. 40 M/M 60 M/M 29 M/M FORM. B 50 M/M 72 M/M 30 M/M FORM. D.{John DeLooze - Company Secretary} 40 M/M 60 M/M 29 M/M FORM. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 35 M/M 55 M/M FORM. E.{Mr Elliott - Chief Engineer} 35 M/M 55 M/M FORM. F 23 M/M 38 M/M FORM. H.{Arthur M. Hanbury - Head Complaints} 28 M/M 27 M/M FORM. I. 45 M/M 13 M/M FORM. J.{Mr Johnson W.M.} 55 M/M 18 M/M | ||