Tools for the Workshop Available to Purchase

That spark discharges could erode metal was first observed by Priestly in 1762, but it is only within the past few years that the principle has been applied to the machining of metals. The most sophisticated spark erosion machines so far produced have been developed by La Soudure Elcctrique Languepin, of Paris, and these machines are now available to industry in the United Kingdom and the Commonwealth through a new Anglo‐French company, Solar Weld Langucpin Ltd., Fulledge Works, Burnley, Lancashire.