Mutsara wokutanga: Pazasi pe hydrometer pane bhuru duku uye kumusoro pane pani yezviyereso zvinoremerwa. Mutsara wechipiri: Pazasi pe hydrometer pane girobhu rakaremerwa uye pani kumusoro kwehuremu hushoma. Mubvunzo: Mutsara wokutanga nomutsara wechipiri unoreva chinhu chimwe chete here? Hungu kana kuti Aiwa?
Kwete