Early Gothic clocks usually stood on brackets fastened to the wall, or were hooked to the wall, but such clocks were made to stand on hollow pillars, which contained the weights. As clocks on pillars generally stood lower than wall clocks, more frequent winding was necessary. After the Renaissance, table clocks with astronomical dials began to be made with the dials on both sides, and similar weight-driven clocks were also produced; they needed to stand on a pillar so that the dials at the rear could be easily seen.