Keith,
The stool is a QuicLok model D-749 and yes, it is fully adjustable for height and the position of the backrest and footrest are also fully adjustable. It's very study, a bit heavy, folds flat a fairly comfortable. The list price was $149, but I was able to find it for just over $100 plus tax. You can get a good look at it at http://www.quiklok.com/

Cheers,

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)