16th January 2008, 09:23 PM
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#6 (permalink)
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| Eric Frei Administrator - Brisbane L5 (Dip) Hort Cert III Arb + some
Join Date: Jan 2007 Location: Brisbane
Posts: 6,866
|  Re: Line pull calculator
Welcome to trees, a lot of educated guesses take place daily however RC1 in his crane videos show how many time a close guess is right on centres ... it's a practice thing. |
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