Surface roughness tester accessories include components to improve surface testing measurements. Roughness testers have a small and smooth contact point for measuring small irregularities. Tester probes and extension rods replace damaged or worn out probes or extend the reach of surface roughness testers. Stands and brackets secure and position workpieces for measurement and inspection. Specimens are precisely gauged pieces of metal used to calibrate testers and make comparisons. Tester cables connect equipment to display and readout options like a portable printer.