Found it was really good to get a rough idea of sizing. Due to I printed it on paper you can add cardboard to the back to make it more stable whilst measuring :)

This tool is very handy to get a rough idea of bit size, I glued it onto cardboard to make it more stable. It is good to use on quiet horses but hard on horses that move a bit.

I found this very easy to prepare and use, and knowing exactly what sized bits my ponies require certainly makes sure I use the correct size bits. I have told friends about this measure so they can make sure their horses and ponies are fitted with the correct sized bits too.