We use this board for years at our school and have been very pleased with the price-performance ratio. Obviously, the leadership of the straightedge has changed unfortunately in the current version. Previously, the leadership was made of a plastic cube made of unbreakable material, which was as wide as the groove and so in the groove found his lead. In the current version, this was replaced by a 2-circular inserts. Firstly, the management should be only at 2 points (smaller distance). However, the main problem is the lower capacity. The two inserts are placed with very thin plugs in the transparent part of the rail. When a student is an insert already broken out, although the plate was always transported in the TZ-pocket. It's really annoying that savings be carried out in cents range at the expense of quality and to the detriment of customers. At our last delivery part of the plates still the old (good) model, a part was the new ..... happy he who has caught an old.
