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).
Product specification sheet for a British Sangamo Type N.F. Direct Current Ampere-Hour Meter.
| Identifier | ExFiles\Box 164\3\ img209 | |
| Date | 1st August 1934 | |
| BRITISH SANGAMO COMPANY DIRECT CURRENT AMPERE-HOUR METERS. TYPE N.F. BATTERY PATTERN. 2 Wire. ON METER DIAL: FULL, 30, 60, 120, 150, 180, 240, 270, AMPERE HOURS ON METER PLATE: SANGAMO METER AMPERE HOUR No 4755005 AMPS 60 REVS PER AMP. HR 30 TYPE NF BRITISH SANGAMO CO LTD. ENFIELD, MIDDLESEX, ENG. Fig. 1. Direct Current N.F. Ampere-Hour Meter. British Sangamo Co., Ltd., Cambridge Arterial Road, Enfield, Middlesex, England. Sheet A145/0834 | ||