Adding ,clarkson Tubes To The Early Sentinel Boiler.

T r"OLD type of Sentinel boiler, now superseded by the Super-Senti.ne . 1,_has h.orizontal tubes, six to a jayer,. and with a wide gap between the third . and fourth tubes, 'and......

An Improved Strainer For Water Lifters.

I T IS of the utmost importance, if the efficiency of a steam wagon is to remain unimpaired for considerable periods,, that the water employed in its boiler should he as pure as......

A New Precision Tool For Cylinder Gauging.

TN repair shops where engine overhauls _Litre carried out,it is important to be able to test the cylinder bores to determine accurately the amount of wear from true circularity......