As played by my dad at Elrig was on a carpet laid on the floor and the bowls have no bias. Indoor bowls are played on a carpet laid upon boards and they have bias. An aside to my original post is this, my Grampa Bob Parker, Master Joiner at Elrig, won trophies for both Bowling and Billiards. Not remarkable in itself, but he lost the sight of one eye whilst building a fence for a local farmer, prior to this. He also had the "Clanachan" trait of becoming deaf. Ken