To be specific, if I extrude by pressing E and I type
40 (for 40mm), where do I look up this value on Blender?
Same for when I scale; I'd press S and type
0.2 (for 20%).
In a situation where I would go back to see the size of a face, how do I know if it was scaled 25% or 20%, or how would I know if a face was extruded to 40(mm) and not 55(mm)?
I need to know because I want precision or accuracy for 3d Printing.