Handheld laser rangefinder.
Kev ntsuas qhov deb yog feem ntau nyob rau hauv 200 meters, thiab qhov tseeb yog hais txog 2 hli. Qhov no yog ib tug dav siv laser rangefinder. Functionally, ntxiv rau kev ntsuas qhov deb, qhov ntim ntawm cov khoom yuav tsum tau ntsuas kuj raug xam.
