Xuas tes ua luam ntawv tshuaj luam tau kev lag luam ntawm lub platen ntev (cov platen yog txog li ntawm 90 yards). Cov ntawv luam tawm yob tau yooj yim kis mus rau ntawm lub platen, thiab sab hauv ntawm lub platen yog pre-coated nrog ntau ntawm cov viscous plig. Tom qab ntawd cov neeg ua haujlwm luam ntawv txav lub vijtsam duab los ntawm txhais tes raws ib feem ntawm platen ib qho dhau ib qho, luam ntawv ib lub thav ntim ib zaug kom txog thaum txhua daim ntaub luam tawm. Txhua daim vijtsam duab sib raug rau cov xim luam ntawv. Kev ua haujlwm ntau ntawm hom no yog tsib xoom-cuaj xoom yards ib xuab moos. Kev lag luam los ntawm txhais tes npo luam tawm tseem siv hauv qhov ntau me me los luam tawm cov khaub ncaws txiav khaub ncaws. Hauv cov txheej txheem luam ntawv, txheej txheem txiav ris tsho thiab cov txheej txheem luam ntawv tau sau cais. Ua ntej daim ntaub tsoos tsho tau zoo txhua txoj kev, cov neeg lag luam-haum lossis qauv txawv yog luam tawm ntawm cov ris tsho. Vim tias phau ntawv tshuaj ntsuam luam tawm tuaj yeem tsim cov vijtsam me me rau cov paj me me, nws kuj tseem siv tau los ua cov ntaub npuag xws li cov phuam da dej, ntawv luam tawm cov ntaub pua chaw tshiab, ntaub thaiv thiab ntaub da dej.
Tes npo luam tawm kuj tseem siv los luam tawm cov kev txwv, cov poj niam zoo nkauj heev' s khaub ncaws thiab luam tawm cov ntawv me me ntawm cov khoom lag luam tshawb nrhiav kev ua lag luam.