Show silicon crystal stand model for the construction of a dura dum silicon detector the parts required are one piece of silicon one plew of crystal form one alece of wood 2 24 by 11 indies inches one ot of spring brass 2 by inch one crystal cup one brass brasi bolt rind ind nut 14 inch one screw 3 alach inch ling inns und and two inch flat head thread thread screws bend the brass brasi into shape as shown in the sketch cli and drill one screw lle hole also drill a IT 17 3 32 inch hole polder the nut aut and drill 3 l lc inch hole in one end of y inch screw nil fill tills this with solder and set in the ulder while it Is still liot hot the crystal I 1 up lip it may lay le he of any model the car must st very hard on the calron thus thui preventing the spot froni from he axin ng lost this type of detector will R riep lop the spot through the heaviest of and one way may ever amid wi oi tile the tale table i ts to science end nj invention kai naw nsw N |