First Layer Level Test Lines

I wanted a simple design that had almost no retractions and would draw nice clean line so I could see changes in width and adjust 1st layer height, with a single layer skirt/brim few mm's away I made a great fast test.. you can see I duplicated four of these and covered half my bed.. I made it 18mm by approx 100... easy enough to make longer or shorter.. I created the STL at 1mm thick, but I scaled it so it only prints one line when I used it.. you can scale for different layer heights.. the main line is 1mm wide.. so for 0.4 nozzle if you scaled x and y by 50% you'd could just make more and be one line.. I was testing my 0.8mm