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).
Production inspection and test log for Watford Type EW6 Magnetos.
| Identifier | ExFiles\Box 70\4\ scan0137 | |
| Date | 3rd February 1928 | |
| X8781m X. 8781m. WATFORD TYPE EW6 MAGNETO. X. 7791. PRODUCTION INSPECTION AND TEST. Table Columns: Date. Magneto No. (1) Remarks. (2) Range (degrees) (>58°) (3) Remarks. (4) Tangl. force. 1 to 2 lbs. (5) Remarks. (6) Remarks. (7) Min. sparking speed with sub-columns (a) <=120, (b) <=160, (c) <=170 (originally <=190). Table Data: Row 1: 24-4-28, 100097, OK, 60°, OK, 1.0, OK, OK, 65, 100, 135 Row 2: 24-4-28, 100096, OK, 60°, OK, 1.0, OK, OK, 65, 120, 160 Row 3: 25-4-28, 100093, OK, 60°, OK, 1.0, OK, OK, 65, 110, 160 Row 4: 26-4-28, 100082, OK, 60°, OK, 1.0, OK, OK, 70, 100, 140 Row 5: 14-5-28, 100084, OK, 60°, OK, 1.0, OK, OK, 55, 100, 135 Row 6: 14-5-28, 107842, OK, 60°, OK, 1.5, OK, OK., 65, 115, 180 Row 7: 15-5-28, 107858, OK, —, OK, —, OK, OK, 70, 110, 160 Row 8: 7-9-28, R.H. 113864, OK, 60°, OK, —, OK, OK, 70, 115, 170 3.2.28. | ||