Nov yog qee yam uas yuav tsum tau xav txog thaum yuav lub rangefinder:
1. Kev ntsuas ntau
2. Kev ntsuas qhov tseeb
3. Lub sijhawm siv
Nws tau muab faib ua cov xwm txheej hauv qab no:
a) Tsuas yog yuav tsum ntsuas qhov kev ncua deb li ntawm ob peb metres lossis ntau dua kaum metres, thiab qhov tseeb yuav tsum tsis txhob siab.
* Kev pom zoo - "Ultrasonic Rangefinder" tuaj yeem siv.
* Cov lus ceeb toom - Kev ntsuas cov txiaj ntsig ntawm ultrasonic rangefinder cuam tshuam zoo heev los ntawm ib puag ncig, thiab kev ruaj ntseg thiab kev taw qhia yog qhov phem dua li ntawm laser rangefinder, tab sis tus nqi kuj pheej yig! Nws yog haum rau kev ntsuas sab hauv tsev.
b) Kev ntsuas qhov deb tsis ntev, thiab nws feem ntau yog siv sab hauv tsev, nrog rau cov kev xav tau siab tshaj plaws!
* Kev pom zoo - xaiv tau "Handheld Laser Rangefinder".
* Cov lus ceeb toom - Lub handheld laser rangefinder yog qhov tsim nyog rau kev siv sab hauv tsev, thiab qhov ntsuas qhov tseeb thiab cov nyhuv zoo heev!
(Yog hais tias tus neeg siv yuav tsum tau kuaj xyuas nyob rau hauv ib qho chaw sab nraum zoov, nws raug nquahu kom siv lub laser pom thiab reflector, thiab siv lawv ua ke kom ua tiav qhov kev xav tau thiab cov txiaj ntsig.)
c) Qhov ntsuas qhov deb yog nyob deb, thiab nws feem ntau yog siv rau sab nraum zoov siv!
* Cov lus qhia - yuav "telescopic laser rangefinder" (ie: laser rangefinder telescope)
* Nta - ob qho tib si telescope thiab rangefinder! Nrog ntau qhov kev soj ntsuam zoo, tus neeg siv tau yooj yim taw ntawm lub hom phiaj rau kev ntsuas kev deb tsuas yog los ntawm tus ntoo khaub lig aiming system hauv lub qhov muag! Siv cov pob tshab infrared rays uas tsis muaj teeb meem rau lub qhov muag Laser emission thiab txais tos, tuaj yeem ntsuas qhov deb ntawm lub hom phiaj, nws qhov me me, lub teeb thiab nqa tau yooj yim!
e) Kev ntsuas qhov ntev thiab kev ntsuas sab nraum zoov
* Cov lus qhia - yuav lub tsom iav qhov muag, kom koj tuaj yeem pom meej dua hauv lub teeb muaj zog.
