The mechanical level gauge ndi chowonjezera chofunikira cha matanki amafuta a jenereta, kupereka zowerengera zodalirika komanso zachindunji za kuchuluka kwamafuta. Njira yake yosavuta yoyandama imakwera ndikugwa ndi mafuta, kuonetsetsa miyeso yolondola popanda kufunikira kwa magetsi. Kuyeza uku ndikopindulitsa makamaka kwa jenereta kumadera akutali kapena ovuta komwe makina amagetsi amatha kulephera. Kumanga kwake kolimba kumapirira maelementi, ndipo ulusi wa 1 1/2' BSP umalola kuyika mosavuta pamatangi ambiri amafuta, kupereka chisonyezero chomveka bwino cha kuchuluka kwamafuta kuti apewe kutsika.