Precision made Vernier calliper. Measuring range from 0 150mm Accuracy 0.02mm. Can measure internal and external measurements and also features a depth measuring. Simple tool for accurate measurement of internal and external distances of up to 150mm. Fitted with locknut for holding Vernier position and for repeat measurements. Provided with a sturdy padded plastic case for protection when not in use. Includes depth measuring tool. Measurement locking screw.