This allows one to stand and work using a laptop. The height can be adjusted, so you can sit and work too.
The Quiklok website:
http://www.quiklok.com/catalog/?p=productsMore&iProduct=477&sName=LPH-003
After a year and half, the part (60.00199 - FZPL006 1 nut + 1 plastic insert ) broke, so I am going to order a new piece for it.
www.nippondream.com/file/LPH003 SPARE PARTS.pdf