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).
List of recommended lamp bulbs for standard use.
| Identifier | ExFiles\Box 166\4\ img141 | |
| Date | 7th July 1932 | |
| COPY FOR FILES. Y6089 7.7.32 LIST OF LAMP BULBS RECOMMENDED FOR STANDARD. Headlamp bulbs. 12-14 v.{VIENNA} 36 w, 48 w or 60 w, gasfilled, centre contact S.B.C. cap, BAS. 4 3. (Osram No.S.7012) Central lamp bulb. 12-14 v.{VIENNA} 48 w or 60 w, gasfilled, centre contact S.B.C. cap (Osram No.S.7014) Side lamp bulbs. 12-14 v.{VIENNA} 4 w, vacuum, centre contact, S.B.C. cap (Osram No.S.7126) Tail lamp bulb. As side lamp bulb. Instrument lamp bulb. 12-14 v.{VIENNA} 4 w. Osram S.7126 with S.B.S. centre contact cap. Warning lamp bulb. 16-18 v 3 w. Osram S.7954 with screw cap. Inspection lamp bulb. 12-14 v.{VIENNA} 6 w. vacuum, double contact, S.B.C. cap BAS. 10.D. (Osram No.S.7168) Body lamp bulb. 12-14 v 9w. half opal, vacuum, double contact S.B.C. cap. or 12-14 v.{VIENNA} 6 w. festoon, vacuum (Osram No.S.7282) Hs{Lord Ernest Hives - Chair}/Wst. | ||