08-19-2018, 11:07 PM
(This post was last modified: 08-20-2018, 03:37 PM by KnifeGrinders.)
Thanks for pointing to the video, SHARPCO
What a bubbly pair! I like their "child safe" definition for the sharpness over 600 BESS.
Mike will probably correct me, but I believe one needs a PT50A to discriminate in the under 50 BESS range, and even so any score under 10 is just that, "under 10" because of noise and unavoidable measurement errors.
The PT50B updates the display every 100ms, while the PT50A every 40ms.
With the PT50B that these guys use, the edge must be pressed against the test media line for at least 0.1 second to get an accurate value - in the video it is less than that.
What a bubbly pair! I like their "child safe" definition for the sharpness over 600 BESS.
Mike will probably correct me, but I believe one needs a PT50A to discriminate in the under 50 BESS range, and even so any score under 10 is just that, "under 10" because of noise and unavoidable measurement errors.
The PT50B updates the display every 100ms, while the PT50A every 40ms.
With the PT50B that these guys use, the edge must be pressed against the test media line for at least 0.1 second to get an accurate value - in the video it is less than that.
http://knifeGrinders.com.au