Description  Claims  Drawing  Cited references 

US20100045877A1   [0015] 
US20150298335A1   [0016] 
CN106017353A   [0017] 

Laser Measurement Machine For 3D Noncontact Inspection of Geometric Parameters of Grid Spacers for Nuclear Reactors VVER-1000   [0018] 
Proc. SPIE   [0018]