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Re: "mil"



Original poster: "Charles Hobson by way of Terry Fritz <twftesla-at-uswest-dot-net>" <charles.a.hobson-at-btinternet-dot-com>

Original poster: "Chris Dobson by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<cdobson-at-microtech-dot-com.au>

G'day list,

Glad the ISP probs are over! Can I ask you guys in the US - - - - I presume
that "mils" are thousandths of an inch - - is that right?
Therefore 60mil poly sheet would be approx. 1.2mm - - - is this correct?
Also, does anybody know if the clear plastic sheet used for protecting
table-tops is any good as a dielectric?  It is only 200microns thick tho,
hence
my queries on mils etc.

Regards

Chris

Hi Chris,

Yes, "mils" are thousandths of an inch. Like all good engineers, you have a
handle on converting from inches to meters. 25mm/inch x .06 inches = 1.2mm.
Personally, I prefer the metric system as it is less ambiguous. My physics
teacher (U. S.) in 1944 taught in the metric system and actually used the SI
system of units because he didn't like teaching arithmetic for doing all
those nasty conversions.

Can't answer your question on the dielectric property of your table top
covering. There are many types of plastics, some good  some not so good.

Chuck