... Even though (thankfully) has little to do the picture with the Schneider currently delivered: it is (at least in turns) to the well-known version with the central knurled nut that allows for easy single-handed adjustment! At one time there was the part in each Pupsi market. On haberdashery carousel. For less than ten Märker, today you have to tip and shake the entire network, to something useful fall out ...;) ... yes-yes.
