| Author | Message | ||
     Adrian Tinkerer Username: Adrian Post Number: 173 Registered: 08-2006 Rating: N/A |
He will have used a piece of glass ground to translucence on one side (hence the usual term for them which is... a ground glass). That is transparent enough to act as a window, but opaque enough to project an image onto. I know that sounds vague, but once you get one set up you'll see what I mean. Magic tape has similar properties, and is easier to find. It's one drawback for this job is that it is flexible, so I use a piece of ordinary glass with a strip of magic tape stuck to it. August must have great eyes if he says it "helps" to use a magnifier - lucky chap! I use an 8x hand lens, and it still sometimes takes me one or two tries until I'm sure I've found infinity. However it's a nice combination of easy enough to do, but very satisfying once you get it right. Adrian |