1Industrial?grade soft rubber keys, made of industrial?grade soft rubber, are wear?resistant and durable. Dustproof, anti?fall, waterproof, safety protection, no fear of environmental challenges. 2Coated lens, the measurement target is clearer, and the tripod connection hole makes the measurement more stable and convenient. 3Continuous measurement, two?point height measurement, a new method of distance measurement in seconds. 4Integrated body shell, the body is made of ABS + PC material, non?slip, drop resistant, and comfortable to touch. 5High?definition eyepieces, manual focusing, both nearsighted and presbyopia can be observed with naked eyes. 6Using high?quality optical lens, the measurement is accurate, even if it is foggy, it can be used.