: Magnification: 2X<br> Field of View: 15mm; Mounting Size (in diameter): 23.2mm<br> Microscope: Biological Microscope<br> Insert the lens barrel depth: 29mm<br> Can be inserted into the eyepiece depth: 22mm<br> Note:<br> 23.2mm universal standard interface<br> Huygens eyepiece and wide-angle eyepiece are both 23.2mm interface size, the international standard biological microscope interface size is 0.91 inches, converted to millimeters is 23.2mm. 95% of biological microscopes on the market can be used universally<br> Warm Tips<br> The eyepiece diameter is 23.2mm universal interface, the data is the measurement standard of biological microscopes, except for stereo microscopes<br> Biological microscope eyepiece interface 23.2mm diameter Stereo microscope eyepiece interface 30mm diameter<br> Different batches, different shooting angles and lighting, there are slight differences between the actual product and the picture, which will not affect normal use<br> Material: Metal<br> colour: black<br> Package Contents:<br> 1 x Microscope 2X Barlow Lens<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.