Introducing the Crownulator

Ron Nossaman rnossaman at cox.net
Fri Oct 5 20:09:52 MDT 2007


> I love this....Thanks, dude. The Ronulator dominates. Explain real slow, 
> now, what each mark represents; 7 or 8 to one what?
> xoDA

On the wedge? Watch the hands - I gesticulate. On an 8:1 
wedge, each millimeter of thickness is 8mm of distance from 
the vanishing point. Make a wedge. Set your calipers at 2, 4, 
8, 10, etc millimeters, and mark where they fit the wedge. 
Interpolate in between for the intermediate value (s, 
depending on your choice of increments), and mark those. 
Behold the finished tool, a stone (maybe bronze) age principal 
rendering all the precision we need for the application, 
without batteries or algebra.

Ok, I cheated with the digital caliper. The same thing is 
doable to similar accuracy resolution with a longer wedge and 
an analog rule measuring the fat end of the wedge against the 
length. The longer the wedge, the greater the accuracy.
Ron N


More information about the Pianotech mailing list

This PTG archive page provided courtesy of Moy Piano Service, LLC