Characteristics of Nikon Stereoscopic Microscope SMZ645/660
1. SMZ660 inward tilting 6.3x zoom lens barrel, with a zoom range of 0.8~5 ×;
2. The working distance of the objective lens is up to 115mm, and auxiliary objectives are available for selection;
3. Various combinations of objective lenses and eyepieces can achieve a comprehensive magnification of 4~300 ×;
4. The viewing angles of the eyepiece are as follows:
SMZ645：45°
SMZ660：60°
5. Sealed mirror body, with dust-proof, moisture-proof, mold proof, and anti-static functions;
6. Adopting ergonomic design, we strive to maximize and meet the comfort level of personnel when operating and using microscopes.

Technical parameters of Nikon stereomicroscope SMZ645/660
1. Optical system: internal oblique light path zoom system;
2. Total magnification: Depending on the combination of eyepiece and auxiliary objective used, a total magnification of 4-300X can be achieved;
3. Eyepiece tilt angle
SMZ645：45º；
SMZ660：60º
4. Pupil distance adjustment range: 52-75mm (2.0 to 3.0 in.) (C-W10x);
5. Eyepiece (diopter adjustment):
C-W10X (field of view: 22mm), C-W15X (field of view: 16mm)
C-W20X (field of view: 12.5mm), C-W30X (field of view: 7mm)
6. Zoom range: 0.8-5X
7. Zoom ratio: 6.3:1
8. Auxiliary objective lens (working distance)
AL0.5X（211mm)； AL0.7X(150mm)； AL1.5X(61mm)；
AL2X（43.5mm)； ALERG0.77-1.06X(102-48mm)
9. Working distance: 115mm
10. Lighting system:
G-LSm: 6V-10W Illuminator;
G-LS type: 6V-10W lighting fixture (with winding arm or G-EIA type winding arm);
G-DSLS type: 6-speed 20W lighting fixture (with coiled support arm);
C-FPS type circular fluorescent lighting fixture;
C-FIR ring fiber optic lighting fixture (12V-100W halogen lamp); C-FID Split Fiber Optic Illuminator (12V-100W Halogen Lamp)