The vernier caliper measures outside dimensions to a tenth of a millimeter; the ruler is graduated in both centimeters and inches; the thread scale identifies metric screw diameters; the tire tread gauge reads profile depth via the clip; and the retractable ballpoint writes it all down. Few pens boast this many features, let alone such an elegant, simple, and functional design.

The epitome of quality-obsessed, hand-made, German craftsmanship and precision, seamlessly embodied in a multi-purpose ballpoint pen. Founded in 1945 in a small garage in Brandenburg, the Cleo Skribent pen company grew into a leading Eastern European maker of quality writing instruments, and its Messograf caliper pen soon became a trusted German staple, a weapon of choice among auto engineers, architects, and craftsmen. No matter your trade, we think you will find this tool a buoyant reminder of just how things should be made.

All individual parts and components are made in Germany. The replaceable ink cartridges are standard-size Parker-style and can be found in most stationery stores in the USA.