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).
Introduction of new instrument board features and associated parts for various car models.
| Identifier | ExFiles\Box 62\2\ scan0361 | |
| Date | 11th March 1935 | |
| RMC. c. E.{Mr Elliott - Chief Engineer} c. Hs{Lord Ernest Hives - Chair}/Wst. WST x6135. BY/RD1/W.11.3.35. 20/25 H.P. and 40/50 H.P. Instrument Board, Sec.7190. Instruments with Concave Dials, 19 m/m.{Mr Moon / Mr Moore} Trip, and non-magnetic interference. R.R.Scheme 732. Instruments with the above features which were to be introduced on 'SpectreCodename for Phantom III' and 'Wraith' have now been brought forward to be introduced on 20/25 H.P. and 40/50 H.P. on production. We, therefore, hand you herewith blue prints of all the new parts for record purposes, and to enable experimental cars to be brought up to date if desired. 20/25 H.P.Chassis - L.O.P. D.54635. 40/50 H.P.Chassis - L.O.P. D.75082. Sheets 3 & 4 of the L.O.P.s represent the instruments and temporary board parts, and these are not issued at these point, nor are any details of the instruments as their dial finishes are not yet settled. The following details, of which prints are also attached, are common to both cars. D.74735. Socket, Lampholder. 8 off. D.74992. Retaining Plate. 1 off. D.74993. Shield, Warning Light. 1 off. D.74994. Backing Disc, Warning Light. 1 off. D.74996. Indicator Disc, Ign. 1 off. D.75044. Base, Casing, Inst.Lamp. 8 off. D.75046. Casing, Inst.Lamp. 8 off. D.75047. Washer, Inst.Lamp. 8 off. D.75048. End Stop, Inst.Lamp. 8 off. D.75049. Bulb Holder, Inst.Lamp. 8 off. D.75050. Stud, Inst.Lamp. 8 off. D.75051. Spring, Inst.Lamp. 8 off. D.75052. Support Plate, Insts. 1 off. D.75053. Case, Inst.Group. 1 off. D.75083. Assy.of Instrument Lamp. 8 off. BY/RD. | ||