In Australia, we use metric. On the odd occasion, you will find both imperial and metric depending on the application. Our wood sizes are metric, nuts and bolts

In Australia, we use metric. On the odd occasion, you will find both imperial and metric depending on the application. Our wood sizes are metric, nuts and bolts can be either, nails metric, screws metric, tape measures generally have both imperial and metric, pipes are generally metric though you can get imperial if needed. I have been using metric since the seventies. About the only things I still use imperial for are people's height and the length of fish (for undersize/oversize determination). In regards to woodworking, I much prefer metric over imperial and the millimetre over just about all other base units. That's just my opinion.