Laser Trackers

    Laser Tracking Interferometers are portable Coordinate Measurement Machines (CMM). These devices can accurately measure large objects from one meter to hundreds of meters in size.

    A "Laser Tracker" uses a laser interferometer to measure distance and angular encoders to determine the orientation of the center of a spherical mirror retroreflector (SMR) with respect to the tracker. Combining this information gives you a position. The laser beam can not be broken as the SMR is moved to the measurement location. The device can be accurate to +/- 0.001" when operating within several yards of the tracker.

    The tracker software must help manage offsets because of diameter of the SMR, and other tooling required to measure an edge.

Courtesy Mike Evans

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