Hauv lub tsheb ncua kev kawm ntawv, ob qho tib si tsim muaj lawv qhov zoo. Cia peb saib thawj zaug ntawm ob qhov kev xav tau kev ncua kev kawm. Cov txheej txheem no siv ob txoj hlua kab rov tav-ib sab sauv thiab ib qho qis-kom nqus tau zoo rau sab nraud, txhim kho yob tsis kam, thiab txhim kho tuav. Nws kuj tso cai rau cov neeg tsav tsheb kom hnov txog txoj hauv kev kom meej meej. Txawm li cas los xij, qhov no los ntawm tus nqi siab, vim nws kim heev rau kev tsim khoom, muaj qhov sib txawv tsis sib xws, thiab yuav tsum tau siv zog ntau rau kev saib xyuas.
Hauv qhov sib piv, ob chav A-arm ncua kev kawm ntawv ua tau zoo hauv qee yam. Nws cov qauv yog yooj yim tsis tau zoo, muab siab lateral tawv. Nws tsis tsuas yog muab cov yob ua haujlwm zoo xwb tab sis kuj tseem tuav lub zog tuav ntawm txoj kev, ua rau kev tsav tsheb nyab xeeb thiab txhim khu kev qha. Txawm hais tias muaj kev sib tw ntawm cov nqi tsim khoom thiab kev saib xyuas tsis yooj yim, tag nrho cov kev ua tau zoo ntawm qhov kev ncua kev kawm no yog qhov ua tau zoo.
Thaum xav txog ob lub siab xav thiab ob chav A-arm ncua kev kawm, nws yog qhov tseeb tias ob chav A-arm ncua kev kawm feem ntau ua tau zoo nyob rau hauv cov nqe lus ntawm kev ua tau zoo. Nws ua tau zoo nyob rau hauv absorbing lateral rog thiab tiv thaiv yob thaum tseem muab kev tuav zoo, cia cov neeg tsav tsheb kom tswj tau lub tsheb zoo dua. Yog li ntawd, thaum xaiv lub kaw lus ncua kev kawm ntawv, ob chav A-arm ncua kev kawm ntawv yuav zoo dua raws li cov kev xav tau thiab kev cia siab ntawm cov neeg tsav tsheb feem ntau.
