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 fixing plate with a concentric slot and markings in degrees.
| Identifier | ExFiles\Box 60\4\ Scan206 | |
| Date | 1st February 1934 | |
| EL4 TO BE MARKED OFF IN DEGREES. CONCENTRIC SLOT 4 3/16" DIAM HOLES. C's'k ROLLS-ROYCE, LTD. PRINT ROOM FEB 1 1934 DERBY. FIXING PLATE MTL. M.S. Dimensions and Markings: Degrees: 0, 10, 20, 30, 40, 50, 60, 70, 80, 90 1 7/8" 1 1/2" 2 5/32" RAD 3 1/32" RAD 5/8" DEEP 1 11/32" 3/4" 1/2" 4 3/4" 1/4" | ||