SRN203 series of transflective upright metallurgical microscopes are apply to microscopic observation of opaque objects and transparent objects. This instrument configure reflected and vertical illumination unitlong range flat field achromatic objective lens (no cover glass)large field of vision eyepieces and built-in polarizer observation device, with the characteristics of clear imagefine contrast and easy to operate etc. It is the ideal instrumentof biologymetallographymineralogy precision engineering science and electronics research...It apply to schoolscientific research and factory department and so on.

Configure large field of vision eyepieces and long range flat field achromatic objective lens (no cover glass), the field of view is big and clear.

Coarsly or tinily adjust coaxial focusing, tinily adjust value is 2um, coarse the degree of tightness can adjust and have lock washer and limiting device.
Configure two cases of reflected and vertical illumination unit that can separatly microscopic observation of opaque objects and transparent objects
6V 20w halogen lamp, brightness can be adjusted, trinocular tube can free to switch normal observation and polarizing observation, and also can process 100% transmitted light photography.