I needed a lamp to provide light to two seats at right angles to each other.  This does that well.  It is a bit fiddly to put together.  I wish that each light could be illuminated separately; currently it is the middle one, or the two outer ones, or all three at once.  The knob is on the main post directly below where the three arms join the post, which is convenient.  I like that the shades are white but the black finish on the rest is uninspiring.  A quality control issue, I had to find the appropriate nut and washer to attach the pole to the base and the problem had to do with precision workmanship.  The base is a heavy stone with the decorative metal covering it. The hole in the stone & covering for the pole where drilled separately and then the covering adhered to the stone.  The problem is that they were not alighted properly and thus the post's bolt would not go through.  We were able do a work around for that as well.  But I would expect a bit better quality.