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 detailing of part SCD.493 for a Bracket for an Abney Level.
| Identifier | ExFiles\Box 155\4\ scan0044 | |
| Date | 1st March 1938 | |
| To By/Ald.{F. Allwood - Experimental Design} 1322 Rm{William Robotham - Chief Engineer}/PJH.11/JH.1.3.38. BRACKET FOR ABNEY LEVEL. Will you please detail SCD.493 and instruct one set. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} | ||