1. Thov paub meej tias lub laser rangefinder puas puas ua ntej siv. Yog tias pom qhov rangefinder puas lawm, thov hu rau lub tuam txhab ncaj qha rau kev kho lossis hloov.
2. Thaum lub laser rangefinder raug coj los ntawm qhov chaw txias heev mus rau qhov chaw sov so (thiab vice versa), lub rangefinder yuav tsum tau yoog raws li ib puag ncig tshiab ua ntej siv.
3. Thaum lub rangefinder yog tsim los rau kev ua haujlwm hnyav, nws yuav tsum tau khaws cia zoo li lwm yam khoom siv kho qhov muag.
4. Txawm hais tias qhov rangefinder yog cov ntaub ntawv pov thawj noo noo, nws tseem xav tau kev tiv thaiv npog los yog kev saib xyuas ntau zaus yog tias lub sijhawm siv tau ntub heev.
5. Ua kom muaj kev nyab xeeb ntawm qhov chaw ntsuas. Thaum teeb tsa lub rangefinder, ceev faj tsis txhob taw tes rau ntawm koj tus kheej lossis lwm tus.
6. Kev ntsuas los ntawm cov iav los yog lwm yam khoom pob tshab yuav tsis raug.
