Bill Piche Posted July 12, 2015 Share Posted July 12, 2015 1. chalk only. 2. 20mm block set or wider from 12/31/14 forward. 3. certs requiring a different set than 20mm block require that set. 4. GHP, David Horne, and credit card set blocks do not need to be measured. diy or non branded blocks have to be within .5mm of stated width. 1 Link to comment Share on other sites More sharing options...
Juha Harju Posted July 13, 2015 Share Posted July 13, 2015 Good filming and awesome close. Link to comment Share on other sites More sharing options...
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