SPECIFICATIONS Range: 15.5-25 mm Accuracy: ±0.042 mm Quantity: 15x2 Gradations: 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 21, 22, 23, 24 & 25 mm FEATURES • Check the radius • Concave and convex surface in each leaf WEIGHT: 0.12 Kg Type: Gauge