Board surface with lineation E150:
black grid 10cm.
![Board surface with lineation E150:](/media/cache/d7/5a/d75a1381fc6c92c9e0edb03239aa378d/Mat-E150_ME_XX_P01.lang.jpg)
Steel sheet for all specially-coated writing surfaces of up to a width of 300 cm and a height of 120 cm. The vitreous-enamel coating is stoved at a high temperature by a special process. The surfaces can be written on with chalk and magnets adhere to them.