The adjustment ring DIN 2250C with a diameter of 90 mm from Fortis is a precise measuring instrument made from wear-resistant special gauge steel. This material has been hardened, ground, and polished to ensure high accuracy and durability. The adjustment ring is used for the exact calibration of internal measuring instruments, making it an indispensable tool for professionals in metalworking and measurement technology. With a depth of 90 mm, it offers optimal handling and is suitable for various applications. The adjustment ring belongs to the metal material group, which underscores its robustness and reliability. The precise workmanship and high-quality materials make this adjustment ring a valuable addition to any workshop or measurement station.