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).
Blueprint for a Tecalemit pump drive shaft.
| Identifier | ExFiles\Box 141\2\ scan0180 | |
| Date | 19th April 1939 | |
| 19/4/39 TURN .182 DIA +3 SCREW 2BA R.H. GROUND FINISH .375 +10 .250 +10 .311 DIA 2.540 +10 4.040 +10 4.540 +10 .311 DIA -1/2 .500 DIA +5 CYANIDE HARDEN TECALEMIT PUMP DRIVE SHAFT 3 OFF S/ZN Rm{William Robotham - Chief Engineer} 528 | ||