A set of very useful calipers, suitable for engineers, machinists and enthusiasts alike. Perfect for marking out, drawings, measurement, machining etc. This 3pc set includes: Internal Caliper, External Caliper, Dividing Caliper. Manufactured from high carbon steel with precision ground points and a thumb wheel adjustment nut for quick and accurate use. Maximum opening approximately 180mm. A fully itemised VAT invoice is issued with every order.