Wow! For a first post regarding scales I can't believe the response. Thanks folks. All helpful and all generous. Just one comment, to the person who advised me that only Gringos called harps mouth organs, well I first heard the sweet tin played by my good friend's dad. He was 6' 3" tall, a coal miner and occasionally collected glasses and little bits of people left over at the local Labour Club. He called it the mouth organ and I'm not going to contradict him ;-)