实物量具 meaning in English

material measure

Angle measuring instruments . material measure
角度测量仪表.实物量具
The term " calibration " refers to the set of operations which establish , under specified conditions , the relationship between values indicated by a measuring instrument or measuring system , or values represented by a material measure , and the corresponding known values of the measurement standards maintained by scl
校正一词是指一套操作程序，用以在特定的条件下订定一个测量系统?器具所显示的数值或一个实物量具的数值与标准及校正实验所所保存的测量标准的已知数值两者之间的关系。