... Modular component design can freely assemble.• MX-6R integrated bright-field,oblique illumination,polarizing, DIC differential interf ... quintuple nosepiece, both brightfield and darkfield available ,with DIC slotReversed quintuple nosepiece, both brightfield and ... diaphragm, both centers adjustable,with filter slot and polarizing device slot, switch rod with oblique lighting.12V100W halogen bulb ...