The question is not whether it is needed at all, but whether it can somehow be replaced. Without a building level, by sight, even experienced craftsmen do not work. And if someone says that the ancient builders did without this tool, then they don't care used plumb lines and other methods to determine the flatness of the surface and its vertical provisions. Otherwise, the ancient Colosseum in Rome and other historical buildings would not have stood for thousands of years. What is at hand for a modern master? Most often it is a simple bubble level. Now it is difficult to call it inexpensive, a normal level - about a meter long (and short ones are not suitable for construction, except perhaps to hang a picture) - costs at least 1,000 rubles.
How not to miss the bubble level when buying
Does it make sense to choose a cheaper level? Just do a rudimentary experiment: go to any nearby building tool store, ask for levels of different costs and put them in a row on the counter. A big surprise awaits you.

What's the catch? You just need to choose the right level, even a simple bubble level.
What we pay attention to:
- Case wall thickness. This can be determined by the weight of the device. The heavier it is, the better. Thin walls are easily deformed. If the instrument is dropped or unsuccessfully rammed, and that's it, the accuracy is lost.
- The bubble in the flask should be large enough and only 1mm away from the marks. The small bubble is difficult to navigate.

The level can lie even if it is packed and lies on the counter. So it's worth checking it out when purchasing. This is not difficult to do.

Maybe it's time to keep up with the times?
Or maybe it makes sense to pay a little more and buy a laser level? Now many people use such devices, and there are enough positive reviews about their work. What's handy: It's a small device that fits easily in your pocket. Laser levels are highly accurate and easy to use.

It seems that you look at him - and you will not want another. But don't rush to buy. The laser level also has its drawbacks. First of all, it is impossible for them to work outdoors in sunny weather. So, if you need a level at a construction site, it's better to use the good old bubble. But for finishing work inside - please.

And finally, the main drawback of this gadget is the presence of batteries. The batteries are empty - and that's it, quit your work and run to the store for new ones. And he, like any electrical appliance, may one day simply stop working for internal reasons, which does not happen with a bubble one.
So what's the conclusion? A building level is needed if you do not know how to use plumb lines in the old fashioned way, as the ancient Greeks did. A modern laser level is a good device for working indoors, and if you decide to splurge on it, then it is better to buy the "pro" version. For all others, it is better to give preference to bubble levels, which should be carefully checked upon purchase. How to do this is described in this helpful video:
What level do you use? Maybe you can recommend some trusted brand? Share your opinion in the comments!