This is a Nikon microscope conversion, with 10x wide view eyepieces and diopter adjustment. The nosepiece, which has been beautifully machined/fitted is for 1.25" fittings; the diopter adjustment is extremely smooth. The field of view is roughly equivalent to a 7-8mm eyepiece (my guess); I have used it on an ETX125 and an LX200 10" SCT without a barlow.
Optics are excellent. Sold as is. Buyer pays all shipping charges. Price in $US. Thanks for looking...