BYK-Gardner 4448 Micro-TRI-Gloss Meter In addition to measuring individual gloss values The operate button and scroll wheel are used to control the system System operation is supported by display messages The measurement unit conforms to the standards DIN 67530, ISO 2813, ASTM D 523 and BS 3900 Part D 5 Comes complete with measurement device, protective holder with integrated calibration tile, traceable certificate