CPJ-3000A/AZ series digital profile projector is an ergonomic and reliable measuring instrument with premium quality. This instrument is equipped with foot-switch and multi-functional data processing system, which is convenient to output data and sample, enabling the user to effectively and sufficiently inspect the measured objects. In addition, the instrument is equipped with rotary plate, which can be installed with 3 lenses. As a result, when magnifies the workpiece required differing magnification, the user can only rotate the rotary plate without replacing another lens, making it more convenient to operate. Adjusting focus is available by ascending and descending the projection tube. Non-ascending-or-descending working table improves the stability, measuring range, and accuracy of the instrument.