The Aven Tools 2670013710D 10Diopter Lens is designed for use with the SharpVue XT Digital Microscope and increases magnification to 4.7x 94x based on a 23.5 monitor. This lens provides additional magnification at a 4 inch working distance. Features. For use with SharpVue XT Digital Microscope model 26700137. Glass lens provides crystalclear imaging. Increases magnification range to 4.7x 94x based on 23.5 in. monitor. Ideal for applications that require additional magnificationSpecifications. Working Distance 4 in. 101.6 mm