Re: digitizing engine camshafts...

I'm mostly a lurker, but you reached a subject I know about finally!! What
you need is The Cam Doctor, made by Quadrant Scientific of Louisville,
Colorado. The Cam Doctor is a very precise measuring instrument that
surveys all camshaft dimensions for example, lift, duration, overlap, ramp
acceleration, taper, and individual lobe timing tolerance. In operation,
the Cam Doctor is a simple-looking affair: You lay a cam on some V-blocks,
bring the position-feeler down onto the cam's base circle, and spin the cam
by hand. The unit's output is directed to a nearby desktop computer. The
captured dimensional data (accurate to ten or twenty millionths of an inch)
is instantly plotted on the PC's screen. At the same time, the cam's design
data (the theoretical contour, the blueprint data) is also drawn on screen,
overlaid, you might say, on top of the real-world cam data. In this
fashion, the Cam Doctor compares actual cam data against the intended
design parameters for the cam being tested.

Kendall