At last I've bought a drafting chair, which for those who don't know is a chair with extra oomph in the gas lift mechanism and can raise itself up to the height of, say, my printing bench or working table. I've rarely bought myself a piece of furniture that's specifically directed at my own personal needs so this is an important moment! Of course the person who has sat in it for the longest length of time so far is actually my darling daughter, but at least she's comfortable.
I now have levers for seat tilt, back rake and seat height! And I have to be careful with the height adjustment because it takes off rather fast if you're too enthusiastic