I don’t see coordinates with the drawing tools. When I start to move the cursor after clicking with the Line tool, I see the length of the edge I’ve drawn. Of course I can let go of the mouse and type the desired length to make it precise. With the Rectangle tool I see the length and width of the rectangle I’ve dragged out and can enter the desired dimensions if i want precise ones.
They aren’t supposed to show in the Measurements box when you select an edge with the Select tool.
If you select an edge, its length should show in Entity Info as below.
If you select multiple edges, the total length will be displayed in Entity Info.
I’m sure Justin is using a desktop version of SketchUp but the Measurements box works basically the same way as does Entity Info.
I am familiar with it. Having taught Sketchup primarily to woodworkers for about 15 years, I probably wouldn’t spend the $13 myself.
Those should be good projects for getting to grips with SketchUp.