I changed out my 2 pin crossarms (on my backyard telegraph line that I built in the fall of 2005) for 10 pin crossarms after finding a supply of them. I obtained enough of them to put 3 on every pole; for now I put only one on each pole as some of the poles will have to be replaced with taller ones to accomodate 2 or 3 crossarms and look decent. I will have to get back into the bush and cut a few more trees for that. This is pole #1. I changed out the #6 iron wire for #14 high tensile electric fence wire and added 2 more strands for a 4 wire telegraph line. The little dots on the wires are dragonflies.