On 16 Jan 2005 20:44:10 -0800, wrote:

You might also want to check out WWW.shumatech.com Really a 3 axis
DRO but can also be used as a tach. So you could have a two axis dro
and a tach for a bit over $100.
Dan


Just a little follow-on info. That $100 is for the display only. You
still have to get/mount scales, or modify/mount digital calipers. This
is what provides the display with it's input.

The tach requires that you buy parts and build an IR pickup. Parts
for that are about $5 as I recall.

I'm using the 3-axis DRO on my Smithy and total cost was somewhere in
the neighborhood of $300.

If all 3-axis' on the dro are being used, a tach can still be mounted.
There is a separate input on the back of the case for it, and
push-button switching to make the z-axis read either the mill quill
position or RPM. Whether it reads lathe or mill RPM depends on where
you mount the IR pickup.