Many elements in a building or apartment are inclined towards the floor. This angle of skew is easy to measure with even the simplest of instruments. It is enough to hang a riser made of string and weights. After that, by applying an ordinary school triangle with a protractor, you can easily determine the angle of inclination. The accuracy of the measurement will be sufficient. In this way, it makes sense to measure the inclinations of different elements (rafters, wreaths, etc.) in the roof truss in the attic, and also e.g.. all elements of small garden architecture.
