Atmos clocks are designed to work best when placed on a stable, level surface that does not suffer any jarring. Use the spirit level at the front of the base plate to level the Atmos clock. To level the clock the two feet at the front of the clock are raised up and down by the screws just inside the front case to assist with levelling the clock, adjust these until the bubble is completely central. If the clock will not level within the maximum adjustment of the screws, use a shim or packaging under the appropriate foot.