MG Systems and Welding Inc. (www.mg-systems-welding.com) has introduced an optional ink jet marker for its TMC4500ST, MPC2000, Titan II and MetalMaster Plus plasma and oxyfuel cutting machines. The marker uses a 7-dot head that provides legible characters to 1-in high (25 mm) at speeds to 17 characters per second. The company says the marker works in ambient temperature from 23 degrees F to 113 degrees F and in relative humidity ranging from 10 percent to 90 percent.