Re: Inexpensive DRO's (was Shooting Star...was Sterling)

Hi,
Are you sure about the rotating encoder in these? I have the EscalaII
(3 axis) and the text reads that the quadrature is taken from the rod
directly, from micro etched grooves, analogous to a glass scale. I
havnt seen an error that large from mine, but I havn't really tested
it in depth.

Could the mounting or the wire rod, be loose in some way? I could
also see a miscount happening if the rod was dirty?

Also they will make custom sizes since the rod and case extrusion is
easily shortend.

-Lee

> > > name is Escala II.
> > > cncmasters.com
> I have one of these escala units on a 2 year old jet mill. The
> readout indicates a resolution of .0002 but in practice I have

found

> as much as .005 error. That is the kind of error you will not find

on

> a dro with glass scales.
> These dro scales use a wire and a rotating encoder wheel. You

must

> calibrate these things youself! By that I mean you must go through

a