RS PRO External Micrometer Covering the most common sizes required for engineering or maintenance applications, this set of six external micrometers is a portable solution for your measuring needs. Also included in the kit are setting rods and adjustment tools to fulfil any need. With a satin-chrome finish, the micrometers' spindles and thimbles are corrosion-resistant and easy to clean. Their carbide tips are also corrosion-resistant. Each micrometer contained in the wooden storage case is highly accurate - to ±0.004 mm - and the maximum measurement that can be made is 150 mm. External micrometers are ideal for use in mechanical engineering and allow you to measure the outer dimensions of an object, such as a pipe or a metal rod. As part of the RS PRO range, this set has been thoroughly tested to ensure accuracy and quality. Features and Benefits - External metric micrometer set - Minimum measurement of 0 mm - Maximum measurement of 150 mm - Resolution of 0.01 mm - Accuracy of ±0.004 mm - Set contains six micrometers, setting rods and adjustment tools