Are these good or should I look for an alternative?

No.12561666 ViewReplyOriginalReport
Lately I’ve been getting into mapping out places, locations and objects I would casually pass by on my way to work; inside my head before setting them down on my table with a few tile spacers I got from my local Depot. I’m mostly just trying to calculate the distance between these points inside my head and figure out how to accurately translate them with precise measurements into the real distance.
Now, my second question is, should I simply get a ruler and start manually measuring these objects I so happen to cross next to on my way to work or should I just keep experimenting and see what happens?