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 drawing for a narrow gauge or template with handwritten annotations and dimensions.
| Identifier | ExFiles\Box 170\2\ img026 | |
| Date | 2nd February 1921 | |
| 3 (in circle) 60 (in outer circle) 1650 3-7"dia... 7/8"per... OL G3 60" hub Exp 340A Replaced this tem on car TG 2-2-21 4 7 2.00 180J PROD 60" .022" THICK | ||