Daim ntawv qhia rau kev xaiv ntawm laser rangefinder.
Ntau cov ntsiab lus yuav tsum tau txiav txim siab thaum yuav khoom rangefinder:
1. Kev ntsuas ntau
2. Kev ntsuas qhov tseeb
3. Lub sijhawm siv
Hauv paus muab faib ua cov xwm txheej hauv qab no:
A) Kev ntsuas qhov deb tsuas yog xav tau nyob rau hauv ob peb meters lossis ntau tshaj kaum meters,
Thiab qhov yuav tsum tau muaj yog tsis siab. Tswv yim-koj tuaj yeem xaiv "ultrasonic rangefinder".
Cov lus ceeb toom-Qhov kev ntsuas ntawm ultrasonic ntau yam finder yog cuam tshuam los ntawm ib puag ncig, thiab nws qhov kev ruaj ntseg thiab kev taw qhia yog qhov phem dua li cov laser range finder, tab sis nws cov nqi kuj pheej yig, yog li nws yog qhov tsim nyog rau kev ntsuas sab hauv.
B) Kev ntsuas qhov deb tsis ntev, thiab feem ntau yog siv sab hauv tsev, uas yuav tsum tau muaj qhov tseeb.
Tswv yim-Koj tuaj yeem xaiv "tes tuav laser rangefinder raws li qhia nyob rau sab laug".
Lus Cim-Handheld laser rangefinder yog tsim rau siv sab hauv tsev, thiab qhov ntsuas qhov tseeb thiab cov nyhuv zoo heev. Thaum ntsuas sab nraum zoov, qhov tseeb ntawm cov khoom siv ntawm tes laser rangefinder poob pom tseeb vim muaj kev cuam tshuam ntawm cov teeb meem sab nraum zoov.
(Yog hais tias cov neeg siv yuav tsum tau ntes nyob rau hauv ib qho chaw sab nraum zoov, nws yog pom zoo kom muab lub laser pom thiab lub reflector kom ua tau raws li qhov xav tau ntau yam thiab cov nyhuv.)
Lus Cim: Cov khoom siv hluav taws xob tas mus li siv nyob rau hauv lub laser ntau yam finder yog nyob rau hauv cov liab spectrum visually, uas yuav ua rau irreversible kev puas tsuaj rau lub qhov muag thaum lub qhov muag saib ncaj.
C) Qhov ntsuas qhov deb yog nyob deb, thiab nws feem ntau yog siv rau sab nraum zoov.
Tswv yim-Yuav "telescopic laser rangefinder" (xws li laser ranges telescope).
