Laser apparatus for monitoring geometric errors

摘要: A laser system is provided for monitoring geometric errors in a machine, measuring apparatus or the like. The systems comprises at least one dual beam generator and target assembly. operative to generate first second tightly focused parallel beams. assembly targets line respectively with are sense precise location which they impinged upon by further includes splitter that direct portion of through an angle. third diverted beam. three operatively connected control means utilizes data sensed each assess pitch, roll yaw rotational as well pure displacement errors. plurality such may all be single means.