【Dual Scale - Multi-purpose】 It is made of high-transparent acrylic material, which is impact resistant and scratch resistant, with metric + imperial dual scale system to meet the diversified needs of global users. 【Mini-Portable-Assistant】 Only 4 inches (about 10cm) ultra-thin body, can be put into the toolkit, pocket or even wallet, outdoor work/home maintenance with no burden. 【Three Bubbles Calibration - Accurate Upgrade】 Three leveling bubbles are designed for simultaneous detection (horizontal/vertical/45° inclined), with an error range of ±0.5mm/m, high precision. 【Strong light visualization-industrial design】 Laser engraved scale line + green bubble tube, clear reading in strong/low light environment, chamfered non-slip frame fits the hand curve, continuous operation is not easy to get rid of the hand. 【Full Scene Coverage - Home Improvement Tool】 From RV leveling, furniture installation to picture frames, billiard table calibration, one machine to handle the precise positioning needs of civil engineering, electrician wiring and DIY enthusiasts! 【Dual Scale - Multi-purpose】 It is made of high-transparent acrylic material, which is impact resistant and scratch resistant, with metric + imperial dual scale system to meet the diversified needs of global users. 【Mini-Portable-Assistant】 Only 4 inches (about 10cm) ultra-thin body, can be put into the toolkit, pocket or even wallet, outdoor work/home maintenance with no burden. 【Three Bubbles Calibration - Accurate Upgrade】 Three leveling bubbles are designed for simultaneous detection (horizontal/vertical/45° inclined), with an error range of ±0.5mm/m, high precision. 【Strong light visualization-industrial design】 Laser engraved scale line + green bubble tube, clear reading in strong/low light environment, chamfered non-slip frame fits the hand curve, continuous operation is not easy to get rid of the hand. 【Full Scene Coverage - Home Improvement Tool】 From RV leveling, furniture installation to picture frames, billiard table calibration, one machine to handle the precise positioning needs of civil engineering, electrician wiring and DIY enthusiasts!