In single setup, Helio-Pan II measures length, diameter, distance, roundness, runout, taper angle, parallelism, pitch, and more, depending on configuration. Force regulator on measuring carriage helps factor out operator influence. Parts mount quickly with or without centers; no setting masters are required. OI displays all dimensions. Available models measure lengths up to 16, 32, 50, or 80 in. and diameters 5-6.5 in.