Laser Distance Measure

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Graham Stabler and Jon Elson
wrote:


<snip>

> > for under $1000. There is a tape that is applied to a beam that you
> > supply, and a
> > read head, somewhat like on a DRO scale, that traverses the beam.
> >
> > Jon
> >
>
> Bare in mind that an interferometer will require you to place the
> reflector at a known distance and then move it out to the measured
> distance all the while keeping alignment. This could be tricky
> without long rails etc and if you have a long rail you might as well
> add an encoder strip.

Thanks Graham and Jon,

Before we get too carried away, a couple of things need clarifying.
The device must be portable and self contained (point and measure)
since the aim is to eliminate trotting around repeatedly to place a
tape measure when doing our checks.

The requirement is to have a compact tool that can be used on any
table when we are on a repair call out or doing a retro-fit on a
client's CNC machine.

Also, thanks for the links but I'd really like to get a recommendation
from someone who has personally used such a device.

Catch yer later
John