I made this gauge as one of the originals & gave it to a mate who has been using it almost every day for 5 years. He asked me to give it a bit of a touch up & a new pin so here is the comlpeted thing. It's made of Olive Bole from one of 2 Olive trees planted on Wellington Point about 105 years ago.
http://www.majorpanic.com/images/woodwork/crotty.jpg