Trinocular Biological Microscope PT-MB400A.

• Coaxial coarse/fine focus system, with tension adjustable and limit stopper, minimum division of fine focusing: 2μm. 
• With wide field eyepieces and plan achromatic objectives. The optical system is wide infinity with a polarizing unit and led illumination can be chosen.
• Photography eyepiece, digital & video camera, CCD adapter, and digital camera adapter can be chosen.