Doink, If this Cheshire bears resemblence to the Tectron Cheshire, then
what you do, is cap the Refractor Objective, Place the Cheshire in the
focuser, (Without Diagonal), have a flourescent light overhead, and view
through the Cheshire's peephole. This is how you use a Cheshire with a
Refractor. The reflected light that bounces off the Cheshire's Mirror
will project an image onto the lens elements. Mark