How to measure the size of Chain Link Fence Mesh
Measure your chain link fence diagonally (inside measurements) as shown in the drawing. If the measurement is 2" then the gauge of the wire is typically 9 or 11. If the measurement is 2 1/4" or 2 3/8", then the gauge of the wire is usually 11 1/2, 12 or 12 1/2.