A group of models for demonstrating fundamental GD&T and CMM concepts, including (1) a 12"x12"x12" Cartesian coordinate system for explaining coordinate system components and degrees of freedom (collapsible for storage), (2) a 12" normal vector, cylinder axis and lecture pointer, (3) a Ø2"x8" long, clear cylinder for demonstrating cylindrical and tube like tolerance zones, (4) a 10"x10" planar surface for demonstrating the properties of planar surfaces, and (5) an 8" long "ruby" ball probe for demonstrating CMM probing strategies.
