I just ran across these on the Amazon
I was looking form some thing entirely different and I did not buy these but thought I would put them up for perusal none the less.
PS: The range is HRC 40 to 65 in five degree steps.
I was looking form some thing entirely different and I did not buy these but thought I would put them up for perusal none the less.
PS: The range is HRC 40 to 65 in five degree steps.
Home Hardness Test
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