Bore sizes: 12, 16, 20, 25, 32, 40, 50, 63, 80, 100 mm; Non-rotating accuracy: +/-0.08° (12 & 16 mm bore); Non-rotating accuracy: +/-0.07° (20 & 25 mm bore); Non-rotating accuracy: +/-0.06° (32 & 40 mm bore); Non-rotating accuracy: +/-0.05° (50 & 63 mm bore); Non-rotating accuracy: +/-0.04° (80 & 100 mm bore); Rubber bumpers as standard; Auto switch capable