Thingiverse
FOC - front of center - measuring tool by PeterS1
by Thingiverse
Last crawled date: 4 years, 5 months ago
Front of center measuring tool to calculate the FOC of an arrow
FOC %=[(L/2)-P) *100/L
FOC %=[(total lenght of the arrow/2)-Point of balance from the top) *100/total lenght of the arrow
FOC = [(30 inch / 2 ) -13] *100 / 30 inch = 6,66 %
V1: another Version :)
V3: fits for feathers with 4 or 5"
V4: Optical improvement
FOC %=[(L/2)-P) *100/L
FOC %=[(total lenght of the arrow/2)-Point of balance from the top) *100/total lenght of the arrow
FOC = [(30 inch / 2 ) -13] *100 / 30 inch = 6,66 %
V1: another Version :)
V3: fits for feathers with 4 or 5"
V4: Optical improvement