There's a online video at the bottom of this information that displays you how for making a water level. Normally, You should purchase 1 at Amazon. They have got a cheapo tube for $ten or a greater one particular that can be employed by 1 particular person for $fifty eight https://how-to-level-a-double-wid26803.ziblogs.com/31355885/the-basic-principles-of-how-to-level-a-mobile-home