The quickest and easiest way to check the level of construction with their own hands.

Building level should be checked periodically. In operation, after a simple or even fall, he may go out and display an incorrect value. And new levels do not always show precisely. It does not matter nor the price, neither firm notoriety - producer.

The only sure way to verify the accuracy of the bubble level can only be checked him. Especially because you can do it easily enough with his own hands. How? Consider the following.

By the bubble must produce both horizontally and vertically.

To check the level of construction horizontally We need to find a horizontal flat surface. Attach to it and draw a level line along the level of the two sides.

It turns out a kind of template for verification.

Then you need to remember the position of the bubble in the level and turn it 180 º, having established exactly on the prepared template.

The vial must be in the same position it was in before turning. If so, then the building level shows exactly.

Now it is necessary to verify the bubble vertically. To do this, find a vertical flat surface and make it level.

With a pencil draw a line along the level and remember the position of the bubble. Then, the vertical axis rotated by 180 º level and compare the position of the vial before and after.

Bubble building level can be considered serviceable if the position of the bubble has not changed.

Some people believe that building level can be adjusted. For this podkruchivayut screws on both sides of the bulb or in the absence thereof recommend tapping on the flask.

From my point of view, these methods are time consuming and inefficient. If the level has started to show incorrect values ​​it is better to replace.