A Useful Pressure Gauge.

Progress, Volume II, Issue 8, 1 June 1907, Page 289

A Useful Pressure Gauge.

This is simply an ordinary pressure gauge to about 120 Tb. to the square inch, its main object being to enable motorists and the

users of pneumatic tyres, to continually test the pressure in the tyres at any instant, and so maintain this at a uniform figure ; it saves the laborious trouble of continually screwing the valve of the pump on to the tyre valve each time a test is desired. The gauge is simply screwed over the valve, and on pressure of the spring button it immediately indicates the exact pressure in the tyre. If the pressure should not be to the required figure, the pump can then be attached to the same gauge without the trouble of removing it from the tyre.