pikkusmõõtevahendite liikuva osise (spindli) avata ots, mis mõõtmisel on kontaktis mõõteobjektiga, piece at or forming an end

device which consists of a convergent inlet connected to a cylindrical section generally called the “throat”, seade, mis koosneb koonduvast sisselaskeavast, mis on ühendatud silindrilise sektsiooniga, nimetatuna tavaliselt "kurguks", device inserted in a system intended to use for measurement of the flow rate through system, which consists of contraction and throat, or contraction, throat, and diffuser