Re: RE: DRO/cable source

This business with coatings on the cable bothers me. For absolute best accuracy we should have a wire that has a known and
uniform size. Since the plastic coating will compress around the shaft, it will look like a change in effective diameter. If
that is exactly repeatable it would be OK.

The problem I worry about is that the compressability of plastic varies with temperature and for some materials it vary with the
rate of change. We could get some interesting errors to hunt for if the calibration factor varies with table speed.

Bertho Boman