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).
Blueprint drawing for a water venturimeter with dimensions, formulas, and construction notes.
| Identifier | ExFiles\Box 66a\4\ scan0272 | |
| Date | 22th January 1923 | |
| WATER VENTURIMETER. SWEATED TOGETHER. LAW OF VENTURI Q GALL/MIN = 8.64√H OR 9" DEFLN = 25.92 GAL/MIN H = INS OF Hg. SECTION. 'A.A' THESE HOLES MUST BE IN LINE. THE BORE TO BE PERFECTLY SMOOTH & CONCENTRIC WHEN BUILT UP. THE CHANGE FROM THE PARALLEL BORES TO TAPER SHOULD NOT BE SHARP BUT HAVE A SLIGHT RADIUS. 4 HOLES .0625 DIA: EQUALLY SPACED. .500 PARALLEL EQUAL ON EACH SIDE OF HOLES. PARALLEL BORE. Dimensions and labels: 1.500 DIA:, 1.250 DIA:, 2.200 DIA:, .600, .325, 2.250, .0625 DIA: HOLE, .125 RAD, .050, .500, .250, 1.500 DIA, 1.500, .700, 4.250, 4.750, 1.250 22 JAN 1923 | ||