The GC-CS 235 E chain sharpener is a compact, robust, and reliable tool for precisely sharpening all common saw chains. The adjustable clamping device, which features a scale for precise grinding angle adjustment, allows all cutting links of the saw chain to be sharpened without the need for re-clamping. The adjustable roof angle setting expands the machine's range of applications. A depth limiter protects the chain from excessive material removal. The transparent viewing window, combined with the lighting, enables accurate and safe work even in low light conditions.