"Dot Coins" - The Rockwell Hardness Test

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PALH1
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"Dot Coins" - The Rockwell Hardness Test

#1 Unread post by PALH1 » Tue Jan 09, 2018 10:15 am

great "numis-geek" article, on the C.O.N.E.C.A. WEBSITE ....... :eureka:

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Daniel
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Re: "Dot Coins" - The Rockwell Hardness Test

#2 Unread post by Daniel » Tue Jan 09, 2018 6:48 pm

Good information

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PALH1
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Re: "Dot Coins" - The Rockwell Hardness Test

#3 Unread post by PALH1 » Tue Jan 09, 2018 8:46 pm

TY D

PetesPockets55
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Re: "Dot Coins" - The Rockwell Hardness Test

#4 Unread post by PetesPockets55 » Wed Jan 10, 2018 9:23 am

Very interesting.
The information states the spherical ball used in the tests is 1/16". But the examples images appear to be larger than this. Wonder why the discrepancy? Did I misinterpret something?

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