LRB 20,000C LRB 20000C Long Range LRF is a professional bi-ocular laser rangefinder designed for ground surveillance, target observation and distance measurement up to 20 km. This rangefinder employs proven time-of-flight delay algorithm to ensure the highest accuracy and a single strong impulse to minimise exposure time. With an optional angular mount it can also measure horizontal angles and magnetic azimuth, and vertical angles. Result of distance measurement is displayed through the eyepiece and can be transferred for processing via computer output. Unit has a remote control button. This robust rangefinder can benefit geological and engineering surveying, construction and repair works, maritime navigation, meteorology, and other activities that require accurate long range distance measuring.   Product Features: Distance measurement up to 20 km First or last target selection   Illumination for dark conditions Parallel port Specifications Magnification Field of view   Ranger Finder Laser wavelength, mkm Laser type Pulse energy, mJ Pulse duration at 1/2 the width, ns Photos detector type Measuring range, m Accuracy, m Gating range, m Gating accuracy, m Laser beam divergence (at 80% of power level) , mrad Pulse repetition rate, Hz Diopter adjustment Visual channel objective lens aperture, mm Interface   Environmental Operating temparture rangem, C   Miscellaneous Power supply Protective filter against non eye-safe lasers Tripod socket 1/4" Dimensions, mm Weight, kg   7x 5.5° 1.54 Erbium Glass 5-8 ~30 Ge Avalanche 60-25,000 ± 5 60-4,500 20 1.0 0.15 ± 4 43 RS232 -20° ... +50° DC 12V / NiCd battery Optional Optional 220x200x90 1.9 Accessories   Framed lens Eye shield Coordinate converter Rechargeable battery   Software / Cables Special tools and spare parts Tripod (optional) Angular mount (optional)