Re: [TCML] Determining wire gauge?

[EVP <evp@xxxxxxxxxxx>]

   The winding of half an inch of turns [counting of course] and then 
measuring the length is plenty 'good enough for government work' and 
besides you will know how long a given winding will be so you don't 
really need to know wire size.  Roughly #10 is 0.1" dia, #20 is 0.03", 
#30 is 0.01", and #40 is about 0.0032.  All bare diameters and for the 
smaller sizes [<#30] the insulation thickness increases the apparent size.

   Have a couple of those HFTS 'digital micrometers' and find they are 
as accurate as advertised and a good buy.  A 4" one was on special for 
less than ten bucks last week.  I keep one in my desk and one in the 
shop and only pull out the micrometers when more accuracy is needed.

Ed

Jon Danniken wrote:

> mrapol@xxxxxxxxxxxx wrote:
>
> > I think I'll try this. I have calipers, but they are too coarse to
> > measure anything as fine as this wire.
>
>
> You can buy accurate enough digital calipers (0.0005 resolution) for 
> ten to twenty bucks when they go on sale at harbor freight.  Useful 
> for a lot of things.
>
> Jon
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