On Mon, 12 Jul 2004 19:46:02 -0500, John wrote:

For scribing, a pencil and a washer will do a very good job. Pencil
in the hole in the washer, then run the edge of the washer against the
surface you want to scribe to

Vary the size of the washer to vary the offset from the scribing
surface


Old router bit bearings also work well.

Barry