The National Optical and Scientific Instruments Model 420T-1105-10 Stereoscopic Microscope provides an upright, unreversed three dimensional image that remains in focus throughout the 10-40x zoom range. The microscope features paired widefield 10x eyepieces, set at a 45° incline, and a trinocular port accepts video or DSLR adapters (included)

Additionally, the 420T-1105-10 boasts a heavy-duty universal stand that's counterbalanced for stability. This all-metal stand features a post mount with locking support collar for up or down adjustment of the viewing head. When it comes to focusing, the large dual knobs allow for easy adjustment, while the slip clutch prevents damage from over turning. A tension adjustment eliminates focus drift. This microscope does have built-in illumination.