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).
Modification to the Bentley Instrument Board lighting, listing the necessary new parts.
| Identifier | ExFiles\Box 168a\1\ img095 | |
| Date | 25th August 1937 | |
| 6135 e.{Mr Elliott - Chief Engineer} hs{Lord Ernest Hives - Chair}/RG.{Mr Rowledge} HY{Tom Haldenby - Plant Engineer}/HD.{Mr Hayward/Mr Huddy}7/B.25.8.37. Bentley Instrument Board - RR.Sch.1184. As the proposed patch to carry the rev. counter with two lamps, made originally to RR.Sch.1184, proved that the lighting was inadequate, four lamps are now to be used, and we hand you herewith, prints of the following new pieces :- DB.{Donald Bastow - Suspensions}1137 - Support Plate. DB.{Donald Bastow - Suspensions}1138 - Case. Please have these parts put in hand, one set, and fit up as a complete patch, by adding the following standard parts, when a test of the illumination on them can be made. D.94795 - Bulb Holder. 4 off. D.74735 - Basket. 4 off. D.74736 - Stop. 4 off. D.72090 - Stud. 4 off. D.74771 - Casing. 4 off. D.74772 - Spring. 4 off. D.74773 - Base. 4 off. L.4074 - Washer. 8 off. L.9085A - Spring Washer. 4 off. L.1801A - Screw. 4 off. No.9 x .625 Rnd. Hd.{Mr Hayward/Mr Huddy} Wood Screws. 4 off. 16 Volt Bulbs S.7994. 4 off. B56 BN{W.O. Bentley / Mr Barrington} HY{Tom Haldenby - Plant Engineer} | ||