Lectroetch pioneered the Electro-Chemical Circle Grid method of strain analysis with Dr. Stuart Keeler. This method has been utilized by automakers, steel suppliers, and stamping firms all over the world for decades. With the advent of computerized stereo-lithographic evaluation techniques, this method remains the most accurate way to evaluate stress and strain in a forming process. Lectroetch has the most powerful, heavy=duty grid marking equipment available. We also have a very extensive line of English and metric stencil patterns to suit every forming need. Our GMK Grid Marking Kit, along with the optional carrying case has everything needed to mark your blanks in a portable, easy-to-transport system.