Make sure there are no kinks or knots in the tube so the water can flow easily through the tube.
Check that there are no air bubbles in the water once you have filled the tube, as this can throw off the level.
Another option is to use windshield wiper fluid in the tube instead of water so the liquid is colored and easy to see.
You can also use the water level for construction projects where you need to find 2 level areas on different items that are close to one another.
You can also use a clamp on the top of the end of the tube if you do not want to put holes in the post or if the item is not made of wood and cannot be nailed into.
If you are levelling items that are more than an arm’s distance away from each other, you may need someone to hold the free end of the tube and move it for you so you can ensure the water levels are correct on both ends.
You can then release the attached end of the tube and use the water level on a different area, setting it up again with nails or a clamp.
A tube that is old or worn may be more prone to knots and kinks so you may want to replace it over time.
