Posted by Dimebag on July 21, 2005 at 11:18:57:
We have a hob marked 10NDP but no lead and no lead angle on it. We have measured the lead angle and the result was about 2d12', but it's not accurate enough. We also need the reference diameter to calculate the lead. There probably is a norm which specifies all of those parameters, but we don't have it. Does anybody have a possibility to provide this information? Many thanks in advance.
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