0-150mm 0.001mm Graduation Outside Micrometer Sets - 3210 Series (Insize)Precision you can rely on for external measurements. The Insize 3210 Series outside micrometer set delivers 0. 001 mm graduation for ultra fine checks on parts up to 150 mm in length. Graduation: 0. 001 mm (1 m) resolution for precise readings on small dimensional changes. Measuring Faces: Carbide measuring faces provide exceptional wear resistance for repeatable measurements over time. Measurement Range: 0150 mm external measurement range to cover a