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).
Measurement log for 'Aerolite' pistons, detailing dimensions at various points on the ring lands and skirt.
| Identifier | ExFiles\Box 86\2\ scan0272 | |
| Date | 1st October 1934 | |
| Y.4.BB. UNIT IDENTIFICATION MARK: 33 'AEROLITE' PISTONS, MEASUREMENTS DIMENSIONS TAKEN AT POSITIONS SHEWN Nº | RING LANDS | SKIRT | RING LANDS | SKIRT | A | B | C | D | E | F | G | H | I | J | K 1 | 3.2323 | 3.232 | 3.232 | 3.2328 | 3.2336 | 3.232 | 3.2318 | 3.2313 | 3.2466 | 3.2467 | 3.2472 2 | 3.231 | 3.2307 | 3.2306 | 3.2328 | 3.233 | 3.2317 | 3.2308 | 3.2303 | 3.2468 | 3.2477 | 3.2486 3 | 3.2318 | 3.2317 | 3.2317 | 3.2322 | 3.2323 | 3.2323 | 3.2313 | 3.231 | 3.2468 | 3.247 | 3.2479 4 | 3.2321 | 3.2318 | 3.2315 | 3.2319 | 3.2316 | 3.2324 | 3.2311 | 3.2303 | 3.2462 | 3.247 | 3.2478 5 | 3.2327 | 3.2323 | 3.2325 | 3.2329 | 3.233 | 3.233 | 3.2318 | 3.2317 | 3.244 | 3.2458 | 3.2494 6 | 3.2332 | 3.233 | 3.233 | 3.2318 | 3.2319 | 3.2338 | 3.2328 | 3.2321 | 3.2463 | 3.2457 | 3.2475 THIS PISTON IS SCORED AT I TO J ON SKIRT | ||