On Wed, 12 Oct 2005 14:53:53 GMT, "Tom Gardner"
wrote:


This tool's an epiphany! I wish I had one 30 years ago...especially with my
eyes aging. Google it, they are $50 to $80 and worth many times that. The
one I have is: "On Mark", Simple enough to make, you might have a couple
hours in it. Get the "Fowler" one, it's cheaper and Fred's a
third-generation indentured family servitude guy.


Here is another handy gadget:

http://tinyurl.com/8quak

It goes in a 3/8" collet in a mill -- or in the chuck of a drillpress.
They go on sale now and then for under $100.

Aside from centering for drilling, it's also useful for measuring
between features that are hard to "grab" with calipers or a mike.
Find edge or feature with reticle, zero the DRO, find other
feature, read the DRO.