1 To ascertain, usually by comparison with a standard, the locations at which scale or chart graduations should be placed to correspond to a series of values of the quantity which the instrument is to measure, receive, or transmit
make fine adjustments or divide into marked intervals for optimal measuring; "calibrate an instrument"; "graduate a cylinder"
To make adjustments to a meter or other instrument so that it will give the correct indications with respect to its inputs
(1) to determine the amount of pesticide being applied through a nozzle of a sprayer, duster or granular applicator over a given area, (2) to mark a container or tank to indicate the volume at certain levels