Dab tsi yuav tsum tau them sai sai rau thaum yuav lub laser range finder
1. Kev ntsuas ntau
2. Kev ntsuas qhov tseeb
3. Qhov twg siv
Hauv paus muab faib ua cov xwm txheej hauv qab no:
a) Nws tsuas yog yuav tsum ntsuas qhov deb li ntawm ob peb metres lossis kaum kaum meters,
Thiab thaum qhov tseeb qhov yuav tsum tau tsis siab. Cov lus qhia - "ultrasonic range finder" tuaj yeem xaiv.
Cov lus hais - Kev ntsuas cov txiaj ntsig ntawm ultrasonic rangefinder cuam tshuam zoo heev los ntawm ib puag ncig, thiab nws txoj kev ruaj ntseg thiab kev taw qhia yog qhov phem dua li ntawm lub laser rangefinder, tab sis tus nqi kuj pheej yig, thiab nws yog qhov tsim nyog rau kev ntsuas sab hauv.
b) Kev ntsuas qhov deb tsis ntev, thiab nws feem ntau yog siv sab hauv tsev, yuav tsum muaj qhov siab.
Cov lus qhia - Koj tuaj yeem xaiv "lub tes tuav laser rangefinder raws li qhia hauv daim duab sab laug".
Lus Cim —— Lub handheld laser rangefinder yog qhov tsim nyog rau kev siv sab hauv tsev, thiab qhov ntsuas qhov tseeb thiab cov nyhuv zoo heev. Thaum ntsuas sab nraum zoov, vim muaj kev cuam tshuam ntawm sab nraum lub teeb muaj kuab paug, qhov tseeb ntawm lub tes tuav laser rangefinder poob qis heev.
(Yog hais tias tus neeg siv yuav tsum tau ntes nyob rau hauv ib qho chaw sab nraum zoov, nws raug nquahu kom siv ib tug kws 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 txuas ntxiv siv los ntawm lub laser rangefinder yog pom hauv qhov liab spectrum ntau yam. Thaum lub qhov muag ntsia ncaj qha, nws yuav ua rau qhov muag tsis pom kev puas tsuaj.
c) Qhov ntsuas qhov deb yog qhov ntev, thiab nws feem ntau yog siv rau sab nraum zoov.
Tswv yim - yuav "telescopic laser rangefinder" (ie: laser rangefinder telescope)
