The reason comparators have not changed much in 85 years is that the fundamental technology behind an optical comparator is elegantly simple, and it simply works.

Probing the world of vision and multisensor metrology.

The coordinate measuring machine (CMM) business continues to churn out emerging technologies at an eager pace. Likewise, the 2-D vision measurement industry also is moving with the times. As modern day manufacturing increasingly relies on 3-D computer-aided design (CAD) data to produce accurate parts, the vision world has made the leap into this new dimension.