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).
Test record for Miralite metal conducted on an Upton-Lewis machine, detailing material composition and test parameters.
| Identifier | ExFiles\Box 37\4\ scan 095 | |
| Date | 12th February 1917 | |
| UPTON-LEWIS MACHINE TEST: No. 4 MARK: ML DATE: 12-2-17 MATERIAL: MIRALITE STATE: SECTION: 1" x 1/4" DIST. BETWEEN JAWS: 4 1/2" THROW OF CRANK: 1/4" SPEED R.P.M: 106 SPRINGS: 4 1/2 TOTAL No OF REVS: 32 MILLION OF DIAGRAM MIRALITE METAL WHICH CONSISTS OF ABOUT 88% OF ALUMINIUM, 9.0% COPPER, 1.25% OF ZINC, 1.5% TIN & 1.0% OF MAGNESIUM METAL FRACTURED & CRYSTALLIZED 23 JUN 1917 DE | ||