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).
Chart recording the results of an electrical test, likely a battery discharge, over an 8-hour period.
| Identifier | ExFiles\Box 54\1\ Scan331 | |
| Date | 17th March 1927 | |
| Handwritten Text: SY 17-3-27 170 SY 75 a.h. 103 lbs Average amperes = 6.51 Hours = 8.0 Ampere hours = 52.0 .505 1.80w Printed Text: Top axis: 5, 6, 7, 8, 9, 10, 11, 12, 1 Vertical axis: 0, 1, 2, 3, 4, 5 Right edge (vertical, faint): DE MARYMENTT | ||