How to check the building level, In the construction of horizontal surface is checked the building level. But how accurately shows the level of the same horizontal? To do this, we need to make a small test and check the building level.
Take the level and put it on a flat surface. It can be and not horizontal, main level. Make the marker marks deviation air bubbles. Then return the level of 180 ° and again note the deflection of the bubbles. If he strayed exactly the same value, it means that our level of accurate and you can work with him.
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How to check the building level
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