The 3816B Bench Hardness Tester offers easy, fully automated testing procedures and provides highly sensitive and accurate readings. The 3816B measures the full regular Rockwell Scales according to ASTM and SAE guidelines and accommodates all types of hard or soft metals and alloys, in numerous configurations. The tester is furnished with a diamond indenter, a 1/16" (1. 6mm) ball indenter, three certified test blocks, four test tables – 5. 87" (149mm) and 2. 5" (63. 5mm) flat anvils, 5/8"(15. 9mm) spot anvil and a standard vee anvil and an accessory case.