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).
Dimensional chart for 'Aerolite' pistons from a Bentley 4 Unit engine.
| Identifier | ExFiles\Box 86\2\ scan0271 | |
| Date | 1st October 1934 | |
| BENTLEY 4 UNIT VT36 'AEROLITE' PISTON DIMENSIONS IDENTIFICATION MARK B2 DIMENSIONS TAKEN AT POSITIONS SHEWN TABLE: Headers: RING LAND | SKIRT | RING LAND | SKIRT Nº | A | B | C | D | E | F | G | H | I | J | K 1 | 3.2352 | 3.2348 | 3.2345 | 3.233 | 3.2305 | 3.236 | 3.2347 | 3.234 | 3.2458 | 3.2464 | 3.2472 2 | 3.235 | 3.2347 | 3.2345 | 3.2338 | 3.231 | 3.236 | 3.235 | 3.2346 | 3.246 | 3.2466 | 3.2485 3 | 3.2342 | 3.2336 | 3.2337 | 3.2347 | 3.2339 | 3.2348 | 3.2337 | 3.233 | 3.2452 | 3.2458 | 3.2468 4 | 3.2348 | 3.2344 | 3.2344 | 3.2345 | 3.2323 | 3.236 | 3.2348 | 3.234 | 3.246 | 3.2464 | 3.2475 5 | 3.235 | 3.2346 | 3.2347 | 3.2342 | 3.2304 | 3.236 | 3.235 | 3.235 | 3.2468 | 3.247 | 3.2492 6 | 3.235 | 3.235 | 3.235 | 3.2345 | 3.2336 | 3.236 | 3.2344 | 3.2341 | 3.2458 | 3.2453 | 3.2456 | ||