The LOMO EP-EM10S Measuring microscope Eyepiece with 10mm Scale will fit ANY DIN microscope, i.e. with eyepiece tube ID of 23.2mm and mechanical tube length of 160mm. Unlike many other measuring eyepieces available on the market, it features a diopter adjustment and removable reticule. We have them in stock at $49.00 each.
Please let me know if you have any further questions.