I wasn't too sure where to put this so have plumped for this subject. Originally I posted elsewhere so I hope I'm doing the right thing by moving it.
Given the many comments on this site regarding Cheshire collimators for Newtonians I've saved up a few dollars to buy one.
Finding one though is something different. I've come across this Orion unit from BinTel but, never having seen a Cheshire, I really don't know what I'm looking at. It's simply called a collimating eyepiece.
https://www.bintelshop.com.au/Product.aspx?ID=5508
Any assistance would be greatly appreciated.