What is the standard unit for cable jacket outside diameter?

The standard unit for measuring the outside diameter of cable jackets in fiber optic technology is millimeters. Using millimeters allows for a more precise measurement, which is particularly important in the context of fiber optic cables that are typically designed with meticulous specifications for performance and compatibility with connectors, ducts, and brackets.

In scenarios where cables are used in close quarters or integrated into existing infrastructures, accurate measurements in millimeters reduce the risk of errors during installation or maintenance. This precision is less effectively conveyed in inches or feet, which are larger units and may lead to less accurate assessments in the compact and delicate environments common with fiber optics.

While microns, or micrometers, is a measure of smaller dimensions, it is not suitable for cable jacket diameter, as the jacket's dimension is significantly larger than the scope micrometers cover.