There are two common sized apertures on a microscope: 23mm and 30mm. If you choose
AM4023 is perfect for 23mm Aperture.
If the inner diameter of your eyepiece slot is 30mm or 30.5mm then the AM4023X is another
versatile digital eyepiece. A unique feature it has is that it is capable of being adjusted for focus
because of its tube design that has a 23mm aperture from top to bottom. Included with the
AM4023X are two adapters which are 30mm aperture and 30.5mm aperture.
If you have a unique aperture where other eyepieces would not fit. The AM4023U would be
useful and may able to meet your requirement The way the AM4023U works is that it is made to
be placed over an existing eyepiece that has a 36mm outer diameter or smaller. The AM4023U is
made to see through your current existing eyepiece which eliminates the need to figure out your
microscopes eyepiece slot aperture.
The AM4023 series eyepiece camera is designed with a zoom-in feature. The field of view
(FOV) is approx. 12-14mm allowing for a high quality image of a reduced area.