(2400 W M)2 / [1+(DM)2]
M = Mesh
W = Weight of bare wire per lin. ft.
D = Diameter of wire
Special Note: Where the size of wire is equal to, or is greater than the width of opening, a factor of error, which cannot be eliminated, develops in the above formula. To compensate for this unavoidable defection, in all such cases and also one size lighter in each specific instance an arbitrary 5% has been deducted from the full calculated weight in arriving at the standard net weights as recorded on these pages.