Jamieson, Fausset and Brown on Exodus 25:31

31. candlestick--literally, "a lamp bearer." It was so constructed as to be capable of being taken to pieces for facility in removal. The shaft or stock rested on a pedestal. It had seven branches, shaped like reeds or canes--three on each side, with one in the center--and worked out into knobs, flowers, and bowls, placed alternately [Ex 25:32-36]. The figure represented on the arch of Titus gives the best idea of this candlestick.