YOU CAN MEASURE most things in the physical world with centimeters and inches. A standard ruler handles both—but it ignores digital environments, which render in pixels, and typefaces, which print in picas. Designers who work with all four units either excel at mental math (a 12-point font is one pica, or 0.167 inches, tall), or, more … More 09:30 AM The Clever Lindlund Ruler Measures the Digital and Physical Worlds