Whatever the rule you use, you'll get the best results if you use the
same one for all measurements in one project. If you use a couple of
rulers make sure you compare them. You'll probably find that they are
all off a little bit. So if you use the "long" one to measure one part
and "short" one to measure a matching part, you'll probably not be
able to fit them together.

On 15 Aug 2006 17:58:02 -0700, "professorpaul"
wrote:

You don't need someone to hold the "dumb end" of the rule when making
long measurements, as it will support itself, within reason.