The measuring microscope is a multifunctional microscope measuring system which integrates optical, mechanical, electrical and video elements. It provides eye piece magnifying, visual display magnifying, input and output data processing functions. The observation system includes three types: single eyepiece, double eyepiece and CCD image. The video toolmaker microscope is widely used for electronic components, precision mold, precision tool, spring, plastic rubber, oil seal valve, camera components, automobile components and PCB processing components, etc With RS-232 communication interface connected with a computer, the microscope can input and output measuring results and save images. Special measuring software M2D-AT is used to automatically detect edges .You can measure work pieces just by clicking the mouse instead of programming, it is simple, convenient, easy to learn and suitable for needs of different users.It is mainly used to measure geometric elements such as length and angle, thread parameters, cam, gear and cutting tool (milling cutter, hobbing cutter and screw tap), cone and cylinder components, templates and hole pitch, etc. Eyepiece reticule can be used for compare measurement and coordinate measurement with magnification of the sizes and outline of the work pieces. In addition, it can be also used as a observation microscope in precision processing industry with non-contact measurement, e.g. to inspect the surface roughness via relative measuring methods.