Rail Gauge Qws yog ib qho cuab yeej tseem ceeb hauv kev tsheb ciav hlau, tsim los rau kev ntsuas qhov tseeb ntawm kev ntsuas ntsuas. Feem ntau tsim los ntawm cov hlau ruaj khov, nws ua raws li cov qauv tsim los xyuas kom meej qhov sib nrug ntawm txoj kev tsheb ciav hlau, yog li lav kev nyab xeeb thiab ruaj khov ntawm kev thauj mus los. Track gauge yog hais txog kab rov tav nyob nruab nrab ntawm ob txoj kev tsheb ciav hlau, thiab Rail Gauge Qws, nrog rau nws cov qauv tsim thiab kev tsim khoom, ua kom yooj yim ntsuas qhov kev ncua deb. Cov cuab yeej no yog qhov tseem ceeb rau cov neeg ua haujlwm saib xyuas kev tsheb ciav hlau, ua rau lawv tuaj yeem hloov kho raws sijhawm thiab ua cov haujlwm tu tsim nyog. Rail Gauge Rod plays lub luag haujlwm tseem ceeb tsis yog hauv kev tsim kho kev tsheb ciav hlau nkaus xwb tab sis kuj tseem nyob rau theem ua haujlwm, muab kev txhawb nqa kev txhim kho kom ntseeg tau tias muaj kev nyab xeeb thiab xis nyob ntawm cov tsheb ciav hlau.
