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Mitutoyo Rebound Hardness Tester,
Model HH411

The HH411 is a portable rebound hardness tester from Mitutoyo using the Leeb rebound hardness testing method and offering extended capabilities and unmatched ease of operation. This is one of the leading rebound-style testers in the market due to its unmatched quality.

  • Converts to most common hardness scales, HRC, HRB, HV, HB, Shore, and tensile strength
  • Handy and easy to use
  • Stores 1800 test results
  • Digital Rockwell and Brinell hardness display
  • Outputs via RS232, USB, and Ethernet
  • Standardized according to ASTM A956
  • Automatically compensates for testing orientation.

Optional Interchangeable detectors for Various applications


  • Model 810-290 UD414 Application suitable for measuring grooves and crevices in gears and weld corners
  • Model 810-289 UD-413 Application Suitable for measurement on concave testing surfaces
  • Model 810-288 UD412 Application: suitable for the measurement of internal walls of cylinders.
    The grip is short which is desirable for reaching into small diameters.

Testing method
Available probes


Internal data storage
Power Supply
Operating temperature

Leeb rebound
D, DC (Inside diameter), DL (for small areas), D+15 (for bearings and gears) Tungsten carbide
1 HL Reeve; 1 HV; 1 HB; 0.1 HRC; 0.1 HRB; 0.1 HRA; 0.1 HS
Automatic Angle Correction Offset, OK/NG, Scale Conversion, Statistics (for Mean, Max value, Min Value, Variation, Std Deviation), auto-sleep, dotting count display
70 x 110 x 35 mm (Display); 28 mm dia x 175 mm (Detector)
200g (Display); 120g (Detector)
7 segment LED
1800 values
RS 232C, SPC
Two AA batteries, AC adapter
0 to + 40 °C
95 % max.

HH411 Rebound hardness tester for quick portable testing on many metals

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