Tough, soft feel ABS plastic bodies with full lock and pause button facilities plus a belt clip. The blade is abrasion resistant nylon coated for wear and corrosion resistance and features continuous metric/imperial graduations. Accurate to 73/362/EEC Class II the blade has 16" and 400mm joist centre markings. The hook is true zero for accurate external and internal measurements and is protected from fast recoil damage by an integral damper