TKM-459 ultrasonic hardness tester.
		  Load: 50N (standard probe)
		  Measurement range: hv240-940, hrc20-70, hb100-450.
		  Measurement accuracy: HV:3%, HRC: 1.5%, HB:4%.
		  Measurement display: backlight liquid crystal display.
		  Storage: can store 6000 measurements.
		  Correction value: 35.
		  Measurement direction: free measurement in the whole direction.
		  Hardness: bushi, lowe, and vickers conversion.