15 is marked (and obvious to the touch)
5 is grey
0.5 is green
Good stuff but it doesn't last very long, even using a light touch. What are you using it on? I've used it on everything (paint sticks; tongue depressors; thick, flat aluminum sheeting; steel rulers) except what is recommended as the best backing -- glass. I have a glass tape blank for my Edge Pro that I'm excited to try it on.