Mon January 25, 2021 - National Edition GSSI InstroTek Inc. will serve as national and international distributor of GSSI’s PaveScan RDM continuous asphalt density gauge. GSSI, a manufacturer of ground penetrating radar (GPR) equipment, announced that InstroTek Inc. will serve as national and international distributor of GSSI's PaveScan RDM continuous asphalt density gauge. PaveScan provides accurate real-time measurements to ensure pavement performance and quality. Based in Research Triangle Park, N.C., InstroTek is a global leader in products and technology development for the construction and raw materials industry, with sales and services offices across the United States. The company holds more than 20 construction materials testing patents, including the first portable nuclear gauge calibration device and the first automatic equipment for accurate density measurements of course and absorptive asphalt samples.