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).
Arrangement of Tachometer blueprint.
| Identifier | ExFiles\Box 165\3\ img142 | |
| Date | 14th September 1934 | |
| STANDARD DRILLING SUPPLIED UNLESS OTHERWISE SPECIFIED. 2-HOLES TAPPED 1/4 WHIT. 5/16 DEEP. LENGTH OF LEADS 2' 6" FROM END. ARRANGEMENT OF TACHOMETER. SCALE 1/1. © 14-9-34. GEN. MOD. 5 1/2". 11/16". 1 9/32". .51. .292 DIA. 25/32 DIA. 7/8". 5/8". 3 1/8". 7/16". | ||