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).
Quotation from Trost Brothers Ltd. for two Rotameters for the Experimental Department.
| Identifier | ExFiles\Box 122\4\ scan0132 | |
| Date | 13th May 1938 | |
| SWINDEN TROST BROTHERS LTD. DIRECTORS: A.{Mr Adams} H.{Arthur M. Hanbury - Head Complaints} TROST, H.{Arthur M. Hanbury - Head Complaints} R.{Sir Henry Royce} TROST, B.SC. TELEGRAMS: TROSTONA SOWEST, LONDON. CABLES: TROSTONA, LONDON. TELEPHONE: VICTORIA 4857. 110 VICTORIA STREET. LONDON, S.W.1. AHT/R.{Sir Henry Royce} 13th May 1938. Your Reference: Rm{William Robotham - Chief Engineer}/TAS{T. Allan Swinden}/3/JH. Messrs. Rolls-Royce Ltd., Experimental Dept. D e r b y . Dear Sirs, ROTAMETER. We beg to acknowledge receipt of your letter of the 12th instant and enclose herewith our catalogue of Rotameters. For the instruments required by you we quote as follows:- One Rotameter, Type as Fig.105; calibrated for use with ethyl petrol; specific gravity to be stated; scale range 7 to 70 pints per hour; indicator float Bronze. Frame with C.I.end connections screwed ½" gas int.thr. Length between connections 29" approx. Price:- £24. 0. 0. One Rotameter, as above but calibrated for 12 to 120 pints per hour:- Price:- £25.15. 0. Delivered Derby. Terms: Net. Monthly account. Delivery: 11 weeks. We regret that in view of the exceptional amount of work in hand we are unable to offer earlier delivery. The pressure drop in these instruments is small and constant for all parts of the scale. Accuracy is guaranteed within plus/minus 2% at all parts of the scale. Kindly note that if variations of specific gravity require to be provided for a modified type of the instrument would be called for, the price of which is somewhat higher. | ||