CALCULATOR FOR ELECTRIC WELDERS
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WELDERS, using electric equipVi' ment, will find their work facilitated by a handy gadget that has just been produced by Philips Industrial (Philips Lamps, Ltd.), Century House, Shaftesbury Avenue, London, W.C.2. It is a calculator, consisting of a cardboard disc, which is masked in such a manner that a variety of sets of readings can be taken from it by adjusting the disc in relation to the mask as required. The information thus speedily obtained includes :— (a) For plate thicknesses from 20 s.w.g. to 1 in., the type of joint that should be made, the gauge of the electrodes to be used and the sequence and number of runs with these electrodes, the number of electrodes needed per foot of weld, the current strength, the depositing time and the total consumption
( b) For 15 types of Philips electrode, the limits of current strength that may be employed, the kind of current, how the electrode should be connected, the tensile strength, the elongation and the hardness,
These calculators can he obtained from the company's branches or agents or its publicity department at the address given above.