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\ scan0078 | |
| Date | 4th January 1933 | |
| LUVAX SHOCK ABSORBERS - INDICATOR CARD RECORD (44) LENGTH OF LEVER ARM ... 8" ... TYPE RMP (Rolls-Royce) DATE 4.1.33 No. I. Card No. | Speed revs | Stroke ins. | Reg. Screw turns | Temp. °C | Side | Indicator Spring lbs/sq" | Piston D" | Valve Springs Turns Open B | F | REMARKS 381 | 70 | 4 | - | 65 | LH {Mr Haworth} | 35 | 1/8 | 2 | 1.7/8 | Max. Pressure 610 lbs/sq.in. 382 | " | " | - | 60 | " | " | " | " | " | 650 " 383 | " | " | - | 55 | " | " | " | " | " | 660 " 384 | " | " | - | 50 | " | " | " | " | " | 670 " 385 | " | " | - | 45 | " | " | " | " | " | 690 " 386 | " | " | - | 40 | " | " | " | " | " | 690 " 387 | " | " | - | 35 | " | " | " | " | " | 710 " 388 | " | " | - | 30 | " | " | " | " | " | 720 " 389 | " | " | - | 25 | " | " | " | " | " | 730 " 390 | " | " | - | 20 | " | " | " | " | " | 780 " | ||