The AC201 Digital Autocollimator is a high performance 2-axis non-contact digital angular displacement sensors. This new series of digital autocollimators builds on the field proven AC400 digital autocollimators previously offered. Like the AC400 series this new generation of autocollimators were specifically developed for companies that produce instrumentation or tooling requiring high precision alignment. The autocollimator also provides a means to inspect and characterize material and components. The package is comprised of a sensor module and with integrated electronics for direct readout from a PC or handheld unit. One of the very unique and useful characteristics of the AC200 Series Autocollimators is the very small beam size. The typical 3mm beam diameter means that the reflecting sample surface needs to be only slightly larger.