For a quarter, the player tries to drag a sawed off screwdriver over a multi-bent rod and keep the screwdriver from touching the rod or the Bell rings and the tool sparks! Other machines made by Northwestern Corp. during the time period Booz Barometer was produced include Hot Nut Dual Nut, Hot Rod, Vendor, Jet, Northwestern Tab Gum, 49 Ball Gum, Dual Nut, Northwestern 49, U.S. Postage Stamp Vendor, and Northwestern 40.