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).
Indicator card record for Luvax shock absorbers.
| Identifier | ExFiles\Box 152\1\ scan0079 | |
| Date | 4th January 1933 | |
| LUVAX SHOCK ABSORBERS - INDICATOR CARD RECORD (45) LENGTH OF LEVER ARM ... 8" TYPE RMP. (Rolls-Royce) No. I. DATE 4.1.33 Card No. | Speed revs | Stroke ins. | Reg. Screw turns | Temp. °C | Side | Indicator Spring Piston lbs/sq" □" | Valve Springs Turns Open B F | REMARKS 391 | 440 | 1 | - | 20 | LH {Mr Haworth} | 350 | 1/8 | 2 | 1.7/8 | Max. Pressure 840 lbs/sq.in. 392 | " | " | - | 25 | " | " | " | " | " | 760 " 393 | " | " | - | 30 | " | " | " | " | " | 760 " 394 | " | " | - | 35 | " | " | " | " | " | 740 " 395 | " | " | - | 40 | " | " | " | " | " | 730 " 396 | " | " | - | 45 | " | " | " | " | " | 730 " 397 | " | " | - | 50 | " | " | " | " | " | 700 " 398 | " | " | - | 55 | " | " | " | " | " | 700 " 399 | " | " | - | 60 | " | " | " | " | " | 680 " 400 | " | " | - | 65 | " | " | " | " | " | 680 " | ||