Sturdy and Vintage: adopting solid brass as material, these sliding calipers are well made and serviceable, firm and hard, well crafted, resistant to distortion, fade and rust, non magnetic, shiny and glossy, full of retro atmosphere, will serve you for a long timeHigh Precision and Easy Carrying: the jewelry caliper measuring tool is clear on scale, with high precision, exact and reliable, convenient for you to accurately get the readings of the measurement; In addition, it is light and mini, allowing you to put it in the bag or pocket to carry, will not take up much spaceDouble Scales to Use: these vernier calipers are designed with double scales, available in mm and inch scales, saving your time to convert units, thus measuring quickly, bringing large convenience to your workSize Details: there are 2 pieces of mini caliper measuring tools in the package, each is about 10 cm/ 4 inches in total length, 3.5 cm/ 1.38 inches in width, whose jaw is approx. 21 mm, and weight is about 42 grams/ 1.48 ounce, practical measuring tools to satisfy your daily demandsperfect for Measuring Jewelry: the buttons on these pocket rulers make it easy for you to push and pull the ruler, perfect for you to measure the inside or outside diameters of wood beads, glass beads, rings, gems, jewelry and other itemsColour:yellowMaterial:brassPackage Contents:2 * Brass CaliperOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.