How do you find out the graticule diameter for your eyepiece?

On the Graticules Optics website you will find a comprehensive list of graticule diameters for many common eyepieces, just click here.

If your eyepiece is not listed here you can have a look at our video to check the size required, click here.

If you are still not sure then you can send your eyepiece to Graticules Optics and we will measure and fit your graticule, for a small charge.