Historical
DIN EN 1370:1997
Founding - Surface roughness inspection by visualtactile comparators (Foreign Standard)
The document describes a method for the evaluation of casting roughness by means of visualtactile comparators. The method is applicable to all casting processes for all cast materials. The method can be used for the assessment of castings or areas of castings in the as-cast condition (beyond removal of casting appendages, such as gates, riser sand flash and removal of residues of the moulding material). The method does not give a means of determining the quality of castings by visual examination. However, since non-destructive testing (ultrasonic, dye penetrant etc.) is influenced by surface condition, preliminary roughness evaluation may be made using this method as an aid to subsequent non-destructive testing examination.
Deutsches Institut für Normung [din]