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).
Promotional leaflet for O.S. Automatic Petrol Gauges, for both visible filler-caps and dashboard mounting.
| Identifier | ExFiles\Box 75\2\ scan0173 | |
| Date | 15th October 1926 guessed | |
| O.{Mr Oldham} S. Automatic Petrol Gauge FOR Visible Filler-Cap. Petrol Level Indicator for front and rear tanks which have a visible filler-cap. The O.{Mr Oldham} S. Gauge takes the place of the filler cap of the petrol tank. The quantity of petrol remaining in the tank is shown by a red number on a white background, thus assuring perfect clearness. The working of the O.{Mr Oldham} S. Gauge is based on the unrolling of a graduated ribbon, equal in length to the height of the tank, the indications are, therefore, more accurate than those of an instrument on a reduced scale, or with a weak dial development. This instrument can also be fitted to rear tanks in cases where the depth of the tank is sufficient to allow the whole of the tube of the O.{Mr Oldham} S. Gauge to enter and remain vertical, or at any rate not to have an inclination greater than 25%. Price 25/-. The O.{Mr Oldham} S. Speedometer Co., Ltd. 3-6 Alfred Place, Tottenham Court Road, London, W.C.1. Telephone—Museum 1601-1602. Cables and Telegrams—“Ospeemeter, Westcent, London.” 19059 O.S. Gauges Patented in all Countries Automatic Petrol Gauge for Rear Tanks giving a Constant Indication on the Dashboard without any manipulation. A PETROL GAUGE is certainly the most necessary instrument on the dashboard, and has been the object of constant research throughout the world. However, up to the present no completely satisfactory instrument had been discovered. Five Years Study. For five years the O.S. Speedometer Co., Ltd., have studied this problem from every point of view. The instrument they now offer is the result of their perseverance. It completely solves the problem and fulfils all requirements. The O.{Mr Oldham} S. Solution. In order to produce a gauge both strong and practical it was necessary to make use of the elasticity of air transmission. This is done in the O.{Mr Oldham} S. Gauge. | ||