| Optical System:  | 
  Twin zooming objective  | 
|  Total Magnification:  | 
 4x to 300x depending on eyepiece and auxiliary objective used  | 
| Interpupilary Distance Adjustment:  | 
  52 to 75mm (2.0 to 3.0 inches) (C-W10x)  | 
|  Eyepiece (with diopter adjustment):  | 
  C-W10x (F.N. 22); C-W15x (F.N. 16); C-W20x (F.N. 12.5); C-W30x (F.N. 7)  | 
|  Zoom Range:  | 
  0.5x to 5x  | 
|  Zoom Ratio:  | 
  6.3:1  | 
|  Auxiliary Objectives:  | 
  AL 0.5x, W. D. 211mm (8.3 in); AL 0.7x, W.D. 150mm (5.9 in); AL 1.5x, W. D. 61mm (2.4 in); AL 2x, W.D. 43.5mm (1.7 in); AL ERG 0.77x - 1.06x, W. D. 102 - 48mm (4.0 - 1.9 in)  | 
| Working Distance:  | 
  115mm (4.2 inches)  | 
| Illumination Systems:  | 
  G-LS 6V-10W Illuminator; G-LS 6V-10W Illuminator with G-E1A Articulated Supporting Arm; 6V-20W Illumination system with 6V/20W Lamphouse; 150W High Intensity Fiber Optic Light Source with single or double light pipes or ringlight; 30W Fiber Optic Light Source with single light pipe standard; Fiber optic cable and adapter for DS Diascopic Stand; Fluorescent Ringlight  | 
|  Stands:  | 
  C-PS Plain Focusing Stand; C-PSC Compact Plain Stand; C-DS Diascopic Stand S; Duplex Epi/Dia Focusing Stand; Universal Table Stand US1 (clamp type); Universal Table Stand US2; Universal Table Stand US3  | 
|  Antistatic Function:  | 
  1000V to 20V, less than 2 seconds  | 
|  Airtight Construction:  | 
  JIS dew prevention standard Type 1 compliant  |