KEY FEATURES / BULLET POINTS COMPLETE SIZE RANGE FOR MOST JOBSIncludes 6″, 8″, and 12″ outside spring calipers, covering small to medium diameter measurements commonly used in machine shops, fabrication, metalworking, and woodworking. PRECISE OUTSIDE MEASUREMENTSDesigned for accurate measurement of outside diameters, thicknesses, and widths on pipes, rods, shafts, tubing, and flat stock. DURABLE STEEL CONSTRUCTIONEach caliper is made from hardened steel for long-lasting durability and resistance to bending or wear in daily shop use. ADJUSTABLE TENSION SCREWSmooth spring action with a fine adjustment screw allows controlled opening and locking for repeatable, consistent measurements. PROFESSIONAL & DIY FRIENDLYIdeal for machinists, welders, mechanics, fabricators, woodworkers, hobbyists, and trade schools. 📦 WHAT’S INCLUDED (BUNDLE CONTENTS) 6″ Steel Outside Spring Caliperhttps://www.toolusa.com/products/quix-6-15-2-cm-steel-outside-spring-type-caliper-precise-thickness-diameter-measurement-durable-tension-screw-mechanism 8″ Steel Outside Spring Caliperhttps://www.toolusa.com/products/tz4508-out 12″ Steel Outside Spring Caliperhttps://www.toolusa.com/products/tz4512-out