measuring

a. Used in, or adapted for, ascertaining measurements, or dividing by measure. [ 1913 Webster ]

Measuring faucet, a faucet which permits only a given quantity of liquid to pass each time it is opened, or one by means of which the liquid which passes can be measured. --
Measuring worm (Zool.), the larva of any geometrid moth. They are so called because they move by a process in which they first pull the rear legs forward toward their front legs, forming a loop which resembles the process of measuring with a tape measure. The motion is completed by subsequently moving the front legs forward to an advanced position. See Geometrid. [ 1913 Webster +PJC ]