| Model | SGO-2004 | 
| Eyepiece | Wide field WF10X(Φ18mm) | 
| Objective (40X/50X/60X one-out-three) | Plan achromatic objectives with long working distance (no cover glass)  PL 5X/0.12 | 
| Plan achromatic objectives with long working distance (no cover glass)PL L10X/0.25 | 
| Plan achromatic objectives with long working distance (no cover glass) PL L40X/0.60 | 
| Plan achromatic objectives with long working distance (no cover glass) PL L60X/0.75  (Spring) | 
| Eyepieces tube | Trinocular,Inclination of 30˚, (Analyzer with field diaphragm to switch) | 
| Vertical illumination unit | 6V 20W, Halogen lamp, adjustable control | 
| Vertical illumination With field diaphragm ,aperture diaphragm and polarizer,(Y,B,G)filter and frosted filter | 
| Focus system | Coaxial coarse/fine focus system, with tensional adjustable and up stop, minimum division of fine focusing: 2um. | 
| Nosepiece | Quadruple Backward ball bearing inner locating | 
| Stage | Double layer mechanical ( Size:160mmX140mm,moving range:75mmX50mm) | 
| Vertical illumination unit | Abbe condenser  NA.1.25  Rack & pinion adjustable | 
| (B,G)filter and Frosted filter | 
| Collector for halogen lamp | 
| 6V 20w halogen lamp, adjustable control. | 
| Optional accessories | 
| Name | Sort/Technique parameter | 
| Camera | USB interface0,5 megapixel or 10 megapixel,with function of photograph ,video etc,and export report forms ,measurement software,precision reach 0.001mu,(recommend) | 
| HDMI interface,1080P HD,with function of photograph,save. | 
| VGA interface,2 megapixel analog signal output |