Specified in chain industry, located in Kırıkkale Oraganize Sanayi Bolgesi, SDL Zincir ve Lastik Koruyucu sistemleri, prefers us for hardness tester in R/SR Rockwell, Superrockwell. METTEST-HT R-SR measures in Rockwell and Super Rockwell Scales in DIN 50150 norms.