Just a little FYI on measuring diagonals using the grid and orthographic viewports or construction planes. When you look at your diagonal line in any of the viewports except perspective, which are Front, Right, Top. If you read how many units to the right, and how many up, this is kinda what aligned dimension does for that viewport. The example Miko has above is about 11 units to the right(a little more), and 7 units up. 11squared +7squared=170square root=13.03 So if you were using whole units with grid snap, the aligned dimension computes that same equation.a2+b2=c2

But it tells you in that same box the exact values

11.09squaredx7.04square=172.5497square root=13.135817

But the aligned dimension will only give you the length of what is in that view, and that equation will only give you what is in the construction plane/view/orthographic viewport. So, for 3 points line(cant think of technical description) or one that doesn’t stick to 2d, a different measuring tool is needed.

So, cursor tooltip is new to me, I just tried it, cool, thank you peeps. ANyways, ona 3d line even in perspective view, when you choose aligned dimension, and snap end to end of it, the cursor will say 34.75, but when you click to dimension it, it will only give you 34 or what is (projected that orthographic viewport) when you go to dimension it.

So, keep this in mind when dimensioning, and you got the equation of what aligned dimension does just in case and for double checking, etc.