READERS RESPOND
Dec 17, 2019
3 minutes
Standard Sharpness Rating
I live in Ferring, a village on the English Channel coast, 50 miles south of London. I am a member of our University of the Third Age, an academic organization for the “retired-but-still-curious” community. We have a science group that meets regularly to discuss scientific matters in the news and of general interest.
A question was posed recently asking how to rate the sharpness of a blade. I have been in
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