MH310 portable Hardness tester 1.Hardness Scale:HL,HB,HRB,HRC, ... ,HV,HS 2.Display:dot matrix LCD,128*64 dots MH310 portable Hardness testerTechnical Specifications:Error and repeatability of displayed value ... , no printing)Communication interface:USB1.1Outline dimensions:212mm×80mm×32mm MH310 portable Hardness tester