The Groz Outside Micrometer is a precision measuring instrument designed for accurate dimensional measurement of external diameters, thicknesses, and widths in the 75–100 mm range. Features a hardened steel spindle, ratchet stop for consistent pressure, and a thimble scale with 0.01 mm divisions for reliable readings in engineering, machining, and quality control work. Ideal for electricians, engineers, technicians, and manufacturing facilities requiring precision measurement tools.