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).
Catalogue page for hand-held and permanent attachment speed indicators (tachometers).
| Identifier | ExFiles\Box 165\3\ img057 | |
| Date | 28th April 1924 guessed | |
| SPEED INDICATORS. HAND USE. These Instruments have been on the market a number of years, and are adopted by the chief Government Departments. A FEW POINTS:— They are made in a variety of ranges, to suit different conditions. They are sensitive and dead beat. They dispense with a stop watch. They are time-saving, as they show r.p.m. at any moment. They can be used in either vertical or horizontal position, or at any convenient angle. Indicate accurately in whichever direction the shaft may be running. 9 SPEED INDICATORS. For Permanent Attachment. Particulars and Prices of our Speed Indicators will be sent on request giving requirements. LUMINOUS DIALS. Any of the Instruments shown on the previous pages can be supplied with Radiumized Dials. Extra will be quoted on request. 10 Text on Gauge: TACHOMETER DRIVING PULLEY 12 TO 18 DIA. ELLIOTT BROTHERS (LONDON) LIMITED 10 20 30 40 50 60 70 80 | ||