Troika Germanyβs Original Construction Pen is the ultimate multi-tool pen, crafted with a well-balanced brass barrel for comfort and precision. Featuring a 10cm and 4-inch ruler, two additional rulers with 1/20 and 1/50 scales, a level, mini flat-head and Phillips screwdrivers, and a color-matching stylus for touchscreens, this pen is perfect for both professionals and enthusiasts. The twist-action ballpoint with a surgical grip ensures smooth writing. Available in various colors with replaceable parts and refills.