Biological Microscope FM-BM-A105 offers infinite optical system, features Trinocular viewing head which is 30° inclined, offers 360° rotation, and Interpupillary distance range of 48 to 75 mm, with dioptre adjustment ± 5, video adapter C munt 1X for Digital camera. Designed with Infinite Plan Achromatic objectives 4X, 10X, 40X (Spring), 100X (Spring, oil) and Extra Wide field EW10X/22 mm and Eyepiece tube 30 mm to offer better observation.