Here's my latest woodworking project I've just finished (at the expense of re-inflaming my RSI). It's a divinatory compass. The faceplate is made of Euro beech, casing is Australian red cedar, hinge is brass, and the needle is one solid piece of cow bone. It's incredibly thin (1mm - 1/32") and was a nightmare to carve without breaking. The symbols have been pyroetched into the wood. Diameter closed is 60mm (2 3/8") and thickness is 27mm (1").