Multiple Ranges To Pick From: Choose the range that fits your needs from 0-130GU, 0-200GU, 0-1200GU, or 0-2000GU, so this glossmeter matches low to high gloss surfaces for your daily tasks. Smart Self-Calibration Base: No need to calibrate by hand; the tool checks itself at power on with an anti-dirt calibration base, so your gloss readings stay steady over long-term use. Hands-Free Continuous Reading: Press and hold for 2 seconds to start nonstop measuring, so this gloss tester keeps logging values on its own while you focus on the surface, not the buttons. Pocket-Sized And Lightweight: At about 80g and the size of a business card, this gloss checker slips into a pocket or tool bag, making on-site gloss checks quick and easy wherever you go. Fits Many Surface Materials: Use this gloss measurement tool to check surface gloss on paint, plastic, metal, ceramics, and building materials, a handy pick for workshops and diy jobs.