About 335+/- , see how it goes and adjust.
Edited @1425- Did that by estimate , just found the confuser in the back of the draw and worked out how to do it.
Using the square graph lines at one end of the slide mark 185/40 on the rotating bit, then mark 232/20. Align the 2 marks against a verticle line on the graph lines and your track (or reciprocal sp?) will show at the top of the computer.
Last edited by funflier44; 31st Jan 2007 at 13:26.