If you need to check the level of something that's more than 6 feet, a water level is just the right tool. Don't want to spend the money on a water level? Use these steps to make one.
More in Home Improvement
A water level is simple to use: Place the base unit on one side of whatever you're trying to level and then open the water valves of the tubing and place the tube on the object you're trying to level. If the base unit beeps at a high rate, you're too high. If there's no beep, you're too low, and if there's a constant beep, you're right on.
If you don't want to spend the cash for a water level, make your own. Here's how: