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).
Advertisement for an Ilford Exposure Photometer, a precision instrument for photographers and illuminating engineers.
| Identifier | ExFiles\Box 168a\3\ img510 | |
| Date | 24th September 1940 guessed | |
| ILFORD Exposure Photometer A precision instrument for the determination of exposures in general photography, reversal processes, copying, enlarging and for accurate measurement of transmission and reflection densities, illumination levels and other factors of interest to photographers and illuminating engineers Manufactured by Salford Electrical Instruments Ltd Distributed by ILFORD LIMITED ILFORD LONDON | ||