Profile: Delcom Instruments Inc. manufactures instrumentation for non-contact evaluation of conductive thin film surfaces. Our non-contact conductance monitor senses and displays the sheet conductance or sheet resistance value of any electrically conductive material. The two part instrument is provided with a twelve inch reach, 0.100 inch gap sensor head. Measurements are accomplished by inserting a conductive sample under the target area within the sensor head gap. The sheet conductance or resistance values are displayed in units of mhos or ohms per square. The 717B is equipped with user programmable pass/fail discrimination. A multicolor vertical bargraph displays the decision point status. Interactive computer control is optional through a bi-directional RS-232 serial port. Rolling resistance monitoring systems are designed for measuring the resistance of continuous coatings or individual coated elements via contact with the sensing roller. The sensing rollers can be designed to measure up to 8 tracks and are self-clocking to measure up to 30 elements per second per track. The system is provided complete with display consoles which show the measurement on each track, pass/fail programming and an output for marking defective elements.