For years I had been using a Rockler swivel stool. Then I developed some back issues and decided to purchase a drafting chair with a back rest. My back seems much improved now, especially when I make a conscious effort for my back to make contact with the backrest. There is a great tendacy to lean forward when scrolling and it is obviously a negative for the back. I might add that the scroll saw is tilted in the back. The Rockler stool has a seat height of 29" so I was looking for something with that dimension.
I shopped office supply stores and the "net". I found a site,
www.restockit.com that had a huge selection but some specs were incomplete and I couldn't easily tell the seat height of some chairs so I sent them a note and Adam called me with helpful information. I decided on the HON drafting chair (Hon ComforTask Task Swivel Stool, Blue
SKU:HON5905AB90T) which has an adjustable seat height. It was easy to assemble (2 sections) and my back is now much improved.
The chair is on rollers and when you get on it it sinks a couple inches so you have to take that into consideration when adjusting the height. I find the rollers help when I am working with a long piece of wood and need to move away from the table so the piece clears my stomach. The downside is that I need a step stool to get on the chair. So I get on the first step of the step stool and roll the chair up to my backside and hop on. The other negative is that it is olefin fabric and collects saw dust, as does everything else in my shop.
Bottom line: For $157 my back is much improved and I can live with the negatives.
The Puzzleman (aka orangeman)