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).
Internal order for three Jaeger tachometers for single cylinder chassis units.
| Identifier | ExFiles\Box 143\1\ scan0185 | |
| Date | 1st August 1936 | |
| from EJJ/JV. c to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Order No. 816. X1209 EJJ/JV4/JC18. 8. 36. Re - SINGLE CYLINDER CHASSIS UNITS. Please order from Messrs. British Jaeger Instruments, Ltd.,:- 3 - JAEGER Tachometers, calibrated 0 to 6000 r.p.m. (needle to travel twice round the dial), old pattern, with drive taken from the bottom, with 2 to 1 Reduction Boxes, and 4'6" drives. Deliver to Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Experimental Department. EJJ/JV. | ||