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 of an electrical discharge test with calculated results.
| Identifier | ExFiles\Box 54\1\ Scan156 | |
| Date | 8th February 1926 | |
| 8-2-26 175 P&R RR11-2 75 a.h. 103 lbs. Average amperes = 6.47 Hours = 10.1 Ampere hours = 65.4 634 1.80v Discharged against any charge Standing amperes = 6.0 Hours = 0.6 Ampere hours = 3.6 REGD. TRADE MARK 'MEGGER' | ||