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).
Request to order a small batch of Osram inspection lamp bulbs for further testing.
| Identifier | ExFiles\Box 166\4\ img102 | |
| Date | 5th February 1931 | |
| E76 .X6089. 5-2-31 JD{J. Draper - Frames}117 X6089. Inspection Lamp Bulbs. Mr Lidsey informs me that the sample inspection lamp bulb (Osram 12V 9W. cat S7172 double contact) submitted to us for test, has so far proved satisfactory & has asked for a few more to be ordered to verify this. Will you please order 6 of these bulbs & if still satisfactory we can order a larger quantity next time. order no 54733 | ||