Laser tracker is a portable 3D large size
measuring system. It measures 3D coordinates
with laser beam by following a mirrored spherical
probe (MSP). The tracker follows MSP in range
of 35m, tracking features at 1000 points per
second with accuracy of 1×10-6. Among the large
size measuring technologies, such as measuring
arms, theodolites, and total station systems, laser
trackers possess many advantages, such as
broad rage, high speed, and high accuracy.