[modeleng] Re: Digital Angle Guage

Do you mean their "CODE: ME-AN-MEAS"? The advertisement claims *resolution*
of 0.05 degree but *accuracy* of 0.1 degree. That's still pretty good for
the price.

> -----Original Message-----
> From: modeleng-bounce@xxxxxxxxxxxxx [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> On Behalf Of Shep
> Sent: Wednesday, December 17, 2008 11:39 AM
> To: Modeleng
> Subject: [modeleng] Digital Angle Guage
> 
> Hello everyone
> When I designed my little lathe, I did not engrave a 'protractor' for the
> topslide - this would have been difficult in the available space, and
> these protractors are not very accurate.   I thought that I would either
> use a sine bar or a vernier protractor - neither of them very attractive
> options to an old chap, with poor mathematics, and less than perfect
> eyesight.
> 
> I was browsing through  the Allendale Electronics web site: www.machine-
> dro.co.uk and found an inexpensive digital angle gauge of the stock-and-
> rotating-blade type, giving readings of 360 degrees to .05 degree alleged
> accuracy.   My suspect maths say that .05 degrees is 3 minutes?    It will
> work in any plane, and has a reasonably accurate level on the stock
> 
> I received it this morning - it is larger than I would have wished (10"
> blades) and looks rather crude, with a rolled aluminium stock, but
> checking it against accurate squares confirms its accuracy.
> It can be zeroed at any point and has a 'hold' facility.   Above all, for
> an old chap, it has clear 12mm figures.    I have tried it on the little
> lathe, with the stock on the edge of the cross-slide and the blade along
> the back of the top-slide, and it works perfectly.
> 
> With a bit of bodging, it will work on the taper-turning attachment on my
> Hardinge lathe and I will include it in the design of the proposed taper-
> tuning attachment for the little lathe.      It will be useful for
> accurate setting of angles for the vertical head on my VMC milling
> machine.
> 
> They also sell a more accurate digital protractor with all the bells and
> whistles at three times the price.
> 
> When I use it in anger next year, I will report further.
> 
> I wish you all a very happy Christmas, with good health and good modelling
> throughout the New Year.
> 
> Cheers!   Hubert
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