I confess. I can't get myself around the platter without nudging the platter or mirror. So tape will be employed during the Minting process on my table. Try spending at least 5 minutes getting the overhang set correctly on the protractor surface, then move on to the first null only to find that you've nudged things just enough to see space between the line and the stylus. AARRGGHHHH!!!
I've compromised and now tape the mirror to the side of the platter instead of the surface. No more marks, no more movement, no more slinging my eyepiece across the room in disgust. ;-)
I've compromised and now tape the mirror to the side of the platter instead of the surface. No more marks, no more movement, no more slinging my eyepiece across the room in disgust. ;-)