> Mechanical timepieces do it for me, though I no longer > have a nice example I have 3 clocks on the go at the moment https://www.flickr.com/photos/97814409@N04/sets/ They use more-or-less conventional movements but adding some electronics and a micro means a lot more scope Trying out some very untraditional escapement ideas, with ideas from Ralph Steiner's films https://www.youtube.com/watch?v=3DY5pen3QMgzQ > http://www.90thidpg.us/Reference/Manuals/TM%209-1575.pdf Guess 30ths is as good an increment as any !!! Don't think I've ever seen a ruler with 30ths. Have one with 10ths, 25ths, 32nds and 64ths Joe --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .