LRM 2500   Optional NVS Coupler that provides the ability to attach a night vision monocular Medium range laser rangefinder monocular family comprises four models: three of them use unified ergonomic lightweight black body with rubberized grip, The models, identical in optics, deliver their outstanding features via advanced data processing algorithms implemented in electronics. All models measure distance to terrain features and still objects as well as speed of moving vehicles. Results can be displayed either in kilometers or in miles. Additionally: LRM 2500 model enable immediate data acquisition through RS232 port, making them compatible with computers and various GPS receivers. Target selection and gating algorithm dramatically improves reliability of measurement in unfavourable ranging conditions (rain, snow, bushes, wires, etc.)   Product Features: Instant and accurate distance measurement Variable measurement units (Meters, Yards) Laser active indicator Target quality indicator Reticle selection (cross or rectangular) Last 10 readings recall Speed detection function (KMH, MPH) Specifications Optics Magnification Objective lens diameter Field of view Range Finder Laser Type Distance measurement range Azimuth measurement range Elevation measurement range Distance accuracy Azimuth accuracy Elevation accuracy Distance resolution Distance measurement time Elevation measurement time First / Last logic Gating capability Gating step Meters/Yards display Computer output Last 10 readings recall Reticle shape selection (+ or ) Target quality indicator Scan mode Speed detector Miscellaneous Battery Low battery indicator Tripod socket Weight without battery Dimensions   7x 25 mm 8° Eye safe 905 nm 20-2,500 m - - ± 1 m - - 1 m 0.5 sec - V 100-2,500 m 100 m V RS232 V V V V V   9V Lithium non-magnetic V V 420 g 120x122x60 mm