B-type
Features:
1. X-Y manual motion device
2. 30-90 angle slantwise Main Binocular Tube
3. motorized focusing system with foot switch
4. motorized zoom system ratio:1:6
5.high resolution, high clear optical system
6. excellent depth of field
7. double fiber optical cables, one for co-axial illumination, another for inclined illumination, can be 3-step changed.
8. main & assistant microscopes are in same optical path
9. free-rotatable assistant binocular tube is available as optional accessories for observing at any angle and at any position.
10. (optional) photo/TV dual attachment and optional still digital camera.

Specification:
1. Eyepiece : Wf12.5X, pupil distance range 55mm to 75mm, diopter range +5D to -5D
2. Main Binocular Tube: 30-90 angle inclinable main binocular tube
3. Objective Changer: parallel optic system, manual zoom changer (zoom ratio: 1:6), total magnification 2.7x t 16x continuously available, field of view Dia. 74m to 12mm.
4. Coaxial Assostant Binocular; 0 angle assistant binocular can swing 90 to 270 angle against main binocular tube, manual 3-step changer, total magnification 4.4X & 7X & 12X with field of view dia. 45mm & 27mm & 17mm
5. Optional Free-Rotatable Assostant Binocular Tube: manual zoom changer, total magnification 2x to 12.5x continuously available, field of view dia. 95mm to 16mm.
6. X-Y Manual Motion Device: X direction swing 45 angle and Y direction swing 90 angle.
7. Co-axial Illumination: fiber optic cable illumination range dia. 50mm, illumination intensity 100,000Lx
8. Focal Length: F300mm (200mm, 250mm, 350mm, 400mm is option)
9. X/Y Motion Range: 25mm
10. Fine Focusing Range: range ±25mm, speed: 33s whole distance
11. Maximum Length of Arm: 1200mm
12. New stand with locking wheels
13. Luxurious stand: swing angle of the carrier arm 0~300 angle, height from objective to floor 800mm﹤H﹤1250mm.