Features: Discover unparalleled precise with our Tester Pen Set (with loupe), featuring state of art technology for measurements accurate to 0.01mm, ensuring every dimension are assessed flawlessly. Suitable for portability and ease of use, this tester boasts a simple push button operate and comes with a 60x magnifying loupe, both crafted from durability ABS, making it essential tool for on travel accuracy. Suitable for jewelers, jewelry designers, and gemstones enthusiasts, this tester set is a for professional who demand exact measurements for their exquisites creations. Whether at a jewelry store, exhibition, or in a jewelry making studio, this tester provide the professional data support need to quickly and accurately gauges the size of in any setting. Enhances your jewelry appraisal toolkit with this reliability and user friendly tester and magnifying loupe, a blend of functionality and convenience for the discerning craftsmen. Specifications: Component:ABS Tester Size:Approx.13.2x4.6x1.2cm/5.2x1.6x0.47inch Magnification Loupe Size:Approx.3.6x1.8x1.99x2.8cm/1.4x0.7x0.78x1.1in Note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color. Package includes: 1pc Tester (with Battery) 1pc TMagnification Loupe