The Model M-24 Transistorized Volt-Ohmmeter is a high speed four digit instrument designed specifically for systems checkout. The high accuracy, speed, and reliability of the instrument are obtained by the utilization of semiconductors and mercury wetted relays. The measured voltages, ratios, or K-ohms, as the case may be, are displayed on the new, easily removable, edge lighted readout developed by Non-Linear Systems, Inc.