Double scale verniers calipers with 0 80mm / 0 3.15 " ranges and 0.1mm resolution ensures measurements in both metric and royal units Features smooth gliding jaw and not skid grips that maintain measurement consistency across various materials from paper to small mechanical component Perfect for school lab, stations, and engineering workshops where easy carry, user friendly measuring instrument essential Lightweight construction with clear, wear resistant marking provide durability and easy readability for repeated classroom or workshop use Ideal for students, hobbyists, and enthusiasts needing stable dimensional measurement tool for educational projects or home improvement tasks, Manufacturer: Jazuaiao