Tools for the Workshop

By applying the principles of the convergent‐divergent nozzle to their new shop blow gun The Hymatic Engineering Co. Ltd. of Redditch, Worcs. has produced a compact light‐weight instrument that is capable of delivering an air jet of 2,000 ft./sec. from the standard shop line pressure of 100 lb./sq. in. Accessories available are 4 ft. 6 in. and 6 ft. 0 in. lengths of oil‐resistant hose and adapter connexions for attachment to existing hose.