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).
Technical drawing for a Driven Wheel for a Revolution Counter.
| Identifier | ExFiles\Box 33\5\ Scan074 | |
| Date | 1st December 1926 | |
| Table: Nº OF TEETH: 52 PITCH DIA: 2.600 D.P.: 20 TYPE OF TOOTH: FELLOW'S OBLIQUITY: 20° CHORDAL THICKNESS: .076 Title: DRIVEN WHEEL REV: COUNTER. Annotations: SCALE ¼ S/N 206 L.281.X R.S. Dimensions: .250 -.10 .075 -.10 .050 RAD: +.10/-.10 2.300 DIA: +.10/-.10 .450 DIA: +.00/+1 .250 DIA: +5/+1 2.700 DIA: -2 .075 RAD: +.10/-.10 .375 -.10 | ||