Self Levelling Level

I used to install Microsot Windows products for work quite often, and then changed collars from white to blue. I know install windows in residential highrises. My Resume looks odd.

Let's say your balancing a window sill and need to make sure everything is square. You lay down the level, and estimate how much it is off over 4 feet.

You grab the shims you need, remove the level, lay down the shims, pick the level back up, and see if it's bang on.

If not you have to repeat the process.

Small telescoping feet would be at either end of the level, which could be pressed in if the level is pused down against a surface for a regular reading.

When let to sit free, the level would automatically adjust its feet as to sit level, floating as high above the surface as needed to sit square.

You could then just insert your shims between the level and the surface and your good to go. No need to eyeball the bubble, especially in low light or adverse conditions.

Magnets on the feet could hold it vertical against a stud or pipe, and then the level could be locked to use as reference for a another stud or anything else.