Monteverde Tool Fountain Pen. Monteverde Tool Fountain Pen is a heavy pen surrounded by 6-sided barrel, smooth writing Fountain pen with stainless steel nib. Consists of phillips and flat head screwdrivers, whole on the barrel are a built-in level, ruler and 3 different scale functions. The chiseled spring clip will hold the Tool Pen securely in your pocket, ready to handle more jobs than any other pen. Accepts standard international cartridges only.