Abstract: A method and apparatus for use with folding machines of the type having a score roll for scoring sheet material which has been coated and/or printed with ink and the like. The method includes, and the apparatus provides for, heating the score roll to a sufficiently high temperature (generally 150.degree.-400.degree. F.) for softening or otherwise tempering the coating material and/or ink for precluding, or minimizing, unsightly damage resulting from cracking of the coating during scoring and creasing, bending or folding of the sheet material along the score line.

Abstract: A novel high frequency electrical probe comprising:A blade-like active body member adapted to be supported at one end with its major plane at substantially 90.degree. to a circuit to which contact is to be made;The other end of said body member formed to have a generally pointed edge to serve as a contact point to be abutted against the circuit;On both sides of said active body member, elements which are approximately coextensive with said body member, but having either no contact points, or pointed edges which abut said circuit at points slightly displaced from the contact point of said active body member.