Free shape gauge by laser pointer

摘要

A gauge can include a face plate and an indication area disposed about a gauge center. The indication area can have a shape that can be defined by a bottom boundary, a top boundary, and first and second ends joining respective ends of the top and bottom boundaries. The top and bottom boundaries can be spaced apart from the gauge center by first and second radial distances. The indication area can be angled rearward relative to the face plate with the top boundary being spaced rearward from the face plate. A plurality of indicia can be disposed on the face plate. The gauge can further include a laser system disposed behind a rear side of the face plate and arranged to rotate and reflect a laser beam to a position adjacent or relative to a specific one of the plurality of indicia based on a signal output from a sensor.