0.1mm High Precision Ocular Micrometer+0.01mm Stage Micrometer Microscope Micrometer, Microscope Camera Calibration Slide, Micrometer Eyepiece, Cross Microscope Calibration Ruler Slides

I was surprised to get both the rectangular and circular targets. I have not used them yet but the quality looks good

For the price, this is a fantastic product. I had a hard time finding a reticle for my microscope, so I was pleased to finally find this one and that it came with a calibration slide. It was a bit of a gamble as the dimensions aren't listed anywhere (at the time of writing) and as you can see in the picture, it is a bit small for my WF 10x DIN/18mm eyepiece, but it does the job. Besides the dimensions not being listed, my only complaint is that the reticle is somewhat pitted. My eyepiece is clear without it, so the black specks in the picture are on the reticle (even after cleaning).Overall, I really recommend it! Especially if you can't afford a name brand one.

I was expecting to have to spend £40-80 for a good 10 micron stage micrometer however this one has proved me wrong. It provides the same level of accuracy as more expensive models with the marks not being too wide at 400x magnification. The occular was too small for my eyepiece but is of good quality also.