He let Anna cut out a two-finger wide and one millimeter-thick steel sheet. He then measured a centimeter-long distance on it, and repeated this until he had a ten-centimeter-long ruler. Then he let Anna’s black flame climb up the steel sheet, and create vertical marks at a regular distance. Under her fine control, the distance between each vertical mark was almost exactly the same.
Roland’s intention was that this ruler was only the start. Afterwards, he wanted to create various kinds of measuring tools to define the samples for uniform weights and measures. These standard units would then be written as the norm into manuals, becoming an inseparable part of his educational courses.