Binocular series handheld laser rangefinder is a new generation of military telescopic rangefinder which integrates modern electronic, optical and laser technology to accurately measure distance. It has the characteristics of small size, light weight, long range, easy operation, small ranging error, good sealing performance and high reliability. It is suitable for distance measurement in the fields of channel, river bed, post and telecommunications cable and power cable erection, oil field geology and mining, railway and road construction survey, etc., and set up standard RS232 serial interface and mechanical connection, which can easily realize signal transmission, and match with Angle measuring instrument to determine the target orientation.