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 diagrams for a standard damper at various strokes and pressures.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan077 | |
| Date | 9th July 1928 guessed | |
| SHEET 3. STANDARD DAMPER .024 VENT 20°C OIL TEMP. 60/80 LOAD 200 CYCLES/MIN 200 LBS / D" H.P. 2" STROKE 200 LBS / D- SLOW RUNNING L.P. 2" STROKE 330 LBS / D" SLOW RUNNING H.P. 6" STROKE 330 LBS / D- SLOW RUNNING L.P. 6" STROKE 200 LBS / D" SLOW RUNNING H.P. 4" STROKE 200 LBS / D- SLOW RUNNING L.P. 4" STROKE MARGIN FOR FILING | ||