calibrate
v[Tn]
mark or correct the units of measurement on (the scale of a thermometer or some other measuring instrument) 标定或校准(温度计或其他一些计量器刻度)上的计量单位.
My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.