Hi All
I have been meaning to make something for a while so with the bank holiday here in UK I decided to get my finger out and get it done. Its a chart that can be pinned on your wall or whatever that will allow you to quickly get an idea of the scan angle of your projector.
Simple to use - stick infront of the scanners at 30cm distance align a central dot with centre of the chart - then run up your scanners to desired speed and adjust to desired angle - or read off the angle from the squares marked out. Markings at 8, 10, 15, 20, 25, 30, 35, 40, 45, & 50 degrees.
Only down side is it need to be printed A3 - so you may need to call in a favour from someone to print it off for you.
Hope its of use.
Rob