Sample of hightensite material provided for machining tests.
| Identifier | ExFiles\Box 24\2\ Scan160 | |
| Date | 15th June 1921 | |
| x1109 R.R. 222a (100 T) (S.H. 798, 10-12-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2948 To RHC. {R. H. Coverley - Production Engineer} from EFC. {E. Fowler Clarke - Electrical Engineer} EFC {E. Fowler Clarke - Electrical Engineer} 9/T15.6.21. X.1109 - SAMPLES OF INSULATING MATERIALS FOR MACHINING TESTS. Herewith piece of hightensite which will you kindly add to the pieces handed to you under cover of our EFC {E. Fowler Clarke - Electrical Engineer} 1/T6.5.21 for the purpose of machining tests. The reference No. of this will be S - Hightensite. You have already had a small piece, ref. letter J of Hightensite moulding, but as this was only a small piece we thought it advisable to hand you this other. EFC. {E. Fowler Clarke - Electrical Engineer} | ||
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).