Rotameter-ka Taxanaha Birta ah ee WPZ waa mid ka mid ah aaladaha cabbiraadda socodka ee loo isticmaalo maaraynta habka otomaatiga ah ee warshadaha ee socodka aagga isbeddelaya. Iyada oo leh cabbir yar, isticmaal ku habboon iyo codsi ballaaran, mitirka socodka waxaa loogu talagalay cabbiraadda socodka dareeraha, gaaska iyo uumiga, gaar ahaan ku habboon dhexdhexaadka leh xawaare hoose iyo heerka socodka yar. Mitirka socodka tuubada birta ah wuxuu ka kooban yahay tuubo cabbir iyo tilmaame. Isku-darka noocyada kala duwan ee labada qaybood waxay samayn karaan cutubyo dhammaystiran oo kala duwan si loo daboolo baahiyaha gaarka ah ee goobaha warshadaha.