When using a water level it is important that there are no air bubbles in the tube or kinks in the tubing and that both ends of the tubing are open to the air. Water will automatically find its same level on both ends of a tube. Water Level - a water level is a piece of clear tubing filled with water, as shown in Figure 6.Depending on the model, they can provide all functions of plumb level and square. Laser level - laser levels, as shown in Figure 4, have become as common as bubble levels, with prices that are competitive with bubble levels. ![]() Many times a board can be warped or have a crown that is not on the center line. If the horizontal surface is longer than twice the length of the level, it is wise to check level at both ends and in the middle.
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