On Wednesday 19 April 2017 16:17:22 andy pugh wrote:

> On 19 April 2017 at 17:43, Gene Heskett <[email protected]> wrote:
> > Next is to change the scale of the jog so the increment/step size,
> > is silently converted to mm's. This means if done directly, the
> > current minimum of .0001" per click jog size becomes
> > 3.93700787401574803e-06 inches, and it will take a bunch of them to
> > get very far. Conversely, at the maximum end of the jog size range,
> > .020mm per click becomes 0.000787401574803149606".  And that is
> > still a very small, unusable jog size.
>
> I think you might be labouring under a misapprehension.

Thats entirely possible.
>
> G20 / G21 mode has no effect on the size of jogs, they are always in
> machine units.
>
Aha, and my machine units are inch.

> I just tried this, when set to display inches, the machine jogs 0.039"
> per click when the jog scale is set to 0.1mm regardless of G20 or G21
> mode.
>
> I had assumed that your worry was that you will find it hard to jog to
> an exact inch position on a mm machine. (and was wondering why you
> cared, but assuming "each to their own")

I am at least as much worried that the metric user can jog .2mm's and 
get .2mm's.  Both according to the DRO, and a metric dial indicator, 
which I don't have one of.  On this side of the pond, its inches or get 
out a calculator.

But if its machine units, the metric user might want to up the size of 
that string of setp's just to get a minimum jog that isn't polishing the 
hubble mirror to the wrong curve. :)

But that still doesn't make a multilabel work.

Thanks Andy,

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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