Coordinate measurement device was from Carl Zeiss Far East Co. The type is PRISMO 7 vast. It can measure the length, roundness, geometric characteristic and etc.

The measurement limitations as following:

X: 900mm; Y: 1200mm; Z: 650mm.

The accuracy as following:

u1=(2.2+L/350)mm; u3=(2.5+L/300)mm; v2=1.7um.