Transmission System Laboratory Model (TSLM) is a model of power transmission systems use to facilitate the studies of power system. TSLM replicates a power transmission system mimicking the real transmission line. The input and output voltage reading on the current TSLM requires a manual measurement using multimeter. The lack of real time monitoring is rectified in this work. This works propose an automated real time measurement and display system for real time voltage input and output monitoring on the TSLM. An imbedded custom made digital voltmeter and a digital display is used for real time monitoring.