Glashütte ribbing

This Calibre GO 90 shows characteristic Glashütte ribbing decoration (click to enlarge!)
This Calibre GO 90 shows characteristic Glashütte ribbing decoration

Linear decoration of a watch movement (plate or bridges), a speciality of the Glashütte watchmaking tradition. The decoration is produced by a rotating grinding wheel that is slightly inclined and moved along the surface of the workpiece in parallel lines.