With the WF10x micrometer eyepiece, the included fiber plate and a calibration slide, you can precisely calibrate your microscope and take measurements on the specimen under test.
The eyepiece can be used in microscopes with a 23.2 mm objective, such as the XSP-151 and XSP-181 series that we sell. It may also be a good choice for other brands of biological microscopes with a 23.2 mm objective.