'JPT' hardness testing diamonds are made according the Rockwell and Richerters system. These indentors are exceptionally fine clean octahedron super lapped to and exact angle of 120° to provide incred...
‘JDT' produce hardness testing diamonds according to the Rockwell & Vickers system. Error free, exactly formed natural diamonds are sintered into the holder. Hardness Indentors are used in manual & Au...