Posted by Wilson hong on January 24, 2013 at 02:04:14:
In Reply to: dowding & doll v4 posted by sandesh patil on January 22, 2013 at 13:49:26:
hi...
the helical formula:
0.06366 x sin(HA) x 25.4/module
or:
0.06366 x sin(HA) x DP