Heavy-Duty Outside Spring Caliper Set – 12″, 15″ & 18″ Steel Precision Measuring Tools with Adjustable Tension Screw | Fabrication & Machinist Caliper Kit

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EY FEATURES / BULLET POINTS PRO-GRADE SIZE RANGE FOR LARGE WORKIncludes 12″, 15″, and 18″ outside spring calipers, ideal for medium to large diameter measurements commonly used in fabrication and industrial settings. PRECISE OUTSIDE MEASUREMENTSDesigned for accurate measurement of outside diameters, thicknesses, and widths on pipes, tubing, rods, shafts, and fabricated parts. DURABLE STEEL CONSTRUCTIONMade from strong, hardened steel to withstand daily use in machine shops, fabrication shops, welding stations, and job sites. SMOOTH SPRING ACTION WITH TENSION SCREWFeatures a fine-adjustment tension screw that allows controlled opening, secure positioning, and repeatable measurements. BUILT FOR PROFESSIONALSIdeal for fabricators, welders, machinists, mechanics, metalworkers, and serious DIY users who work with larger materials. 📦 WHAT’S INCLUDED (BUNDLE CONTENTS) 12″ Steel Outside Spring Caliperhttps://www.toolusa.com/products/tz4512-out 15″ Steel Outside Spring Caliperhttps://www.toolusa.com/products/tz4515-out 18″ Steel Outside Spring Caliper(your 18″ product page) 📝 PRODUCT DESCRIPTION This Heavy-Duty Outside Spring Caliper Set is designed for professionals who regularly measure larger outside dimensions. Featuring 12″, 15″, and 18″ calipers, this bundle covers a wide working range without unnecessary overlap, making it ideal for fabrication and industrial applications. Each caliper is crafted from durable steel and equipped with a smooth spring mechanism and adjustable tension screw, allowing precise control and consistent results. Whether you're checking the outside diameter of pipe, tubing, or fabricated components, this set delivers reliable accuracy every time. Buying this bundle saves time, space, and money compared to purchasing each caliper individually. It’s a must-have measurement kit for shops that handle structural materials, large parts, or heavy-duty projects. 🛠 IDEAL APPLICATIONS Measuring outside diameters of pipes and tubing Thickness checks on metal and fabricated stock Fabrication and welding projects Machine shop and industrial use Large-scale DIY and workshop projects 📌 TECHNICAL SPECIFICATIONS Tool Type: Outside Spring Calipers Material: Hardened Steel Adjustment: Fine Tension Screw Included Sizes: 12″, 15″, 18″ Measurement Type: Outside diameter, thickness, width Show more