Sklar's Surgi-OR pin & wire gauge is a 6 inch ruler that is used to measure inches, millimeters, centimeters and diameters of wire and pins. Surgi-OR mid-grade instruments are forged from the highest quality Japanese steel and provide reliable instrumentation for the operating room and other surgical centers. Surgi-OR instruments are a cost-effective line of instruments that must meet Sklar's quality standards.