33208bae_ning_101___Desktop_Engineering__0
[1] Contact [2] Either or both, Interferometer based or ADM [3] Center of a spherically mounted retro reflector (SMR) contacts surface [4] Laser beam is locked on center of SMR; azimuth and elevation angles of laser beam are measured, distance between laser tracker origin and SMR is measured [5] Laser beam tracks the 3D coordinates of SMR’s center [6] Portable; tracker is brought near the part to measure [0] 
Portable CMM: Laser Tracker
3D Scanning 101 - Desktop Engineering
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