Included: Quality of workmanship. Quality of materials. Readability – stability of colours of the sign plates an marking an measuring posts under normal use and influences of weather. The guarantee does not include: Damage created by wilful behaviour, vandalism and fire. Damage coused by improper mounting and installation or adaptations tot he sign plate. Damage reated by a using the sing plate other than intended. Slight canges in colours because of UV-influence