This Helios 7" Vernier Dial Caliper is a vintage machinist tool made in Germany. With a maximum measurement of 7"/17 mm and a graduation of 0.0010 in, this Vernier caliper is perfect for metalworking inspection and measurement. It is a high-quality caliper type with a vernier scale and a dial gauge, making it easy to read and accurate in its measurements. The brand of this caliper is Helios, a well-known and trusted name in the industry. This caliper is of exceptional quality and will be a valuable addition to any metalworking or manufacturing business. It is a unique and rare find that will surely impress any collector or enthusiast.