How to adjust terrain height accurately?

Unity Engine
1

To make a flat terrain, you can scroll the slide bar by mouse, but can we just put the accurate height value by keyboard?

I accidentally raised a part of terrain which is supposed to be flat and I forget the previous value of the whole flat terrain. Then it seems I can not use the mouse to restore this part of terrain with the same height as that of the other part.

Or how can we tell the height of a terrain created by others?

I spent half an hour and just can not use my mouse to adjust the terrain height of 59, it comes 58.3 or 59.1, just can not get a 59, it make me crazy!

Is this a limitation of Unity or I missed something?

2

Shitft-click on the the Terrain at a specific point that has the height you want using the “Paint Height” tool. 2.5 will introduce numerical input.

Ethan