So far for me I am using the ears for the engine
mounts.. I touch them up with a 4" disc on my die
grinder for a flat surface.. this would be my known
thickness point to test... but I'm still playing with
my new tester... havent played much lately being I have
stuff thats not working on my junker... soon I will get
back to testing blocks since I have a few I want to look
at for up coming jobs... but so far I havent ever seen some
of the numbers posted