LS252C Leeb Hardness Tester

Ideal for testing the hardness of surface hardening layers and parts with small masses or thin thicknesses

Adopts Impact device C
Dual coil technology for good measurement accuracy and repeatability
Probe with orientation sensor for full angle measurement

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LS252C Leeb hardness tester advantage video

The LS252C is an all-in-one hardness tester with a compact size for hardness measurements on various metal materials. Featuring a C-shaped impact device with low impact force, it is suitable for testing the hardness of surface hardening layers and parts with small masses or thin thicknesses. The instrument uses advanced dual coil technology for good repeatability and high measurement accuracy. The probe has a built-in orientation sensor, which automatically compensates for measurement errors in different impact directions. The system has five hardness scales, which can be interchanged between Richter (HL), Vickers (HV), Brinell (HB), Shore (HS) and Rockwell (HRC) to avoid tedious manual calculations.


The instrument uses a impact device C with many metal materials choices for wide applications.


Parameter Value
Probe Impact device C
Hardness   Scales HL, HV, HB, HS, HRC
Measurement   Range HLC: (170-960); HV(80-996);   HB(80-683); HRC(20-69.5); HS(31.9-102.3);
Resolution 1HL
Accuracy ±12 HL, ±6 HL typical
Repeatability 6HL
Display 128 * 64 dot matrix OLED
Power   Supply Rechargeable lithium battery 3.7V@250mAh, full charge for over 5000   continuous measurements
Charging   Port USB(Type-C)
Size 140*34*24 mm
Weight 66g
Working   Temperature Range -10~50℃,0~85%RH(no condensation)
Storage   Temperature Range -10~60℃,0~85%RH(no condensation)


Impact device C for hardness measurement of small or thin metal parts

The instrument uses a impact device C with a low impact force, suitable for testing small masses or thin metal parts and surface hardening layers.

All-in-one design, compact and portable

The instrument weighs only 66 grams and is easy to carry

High accuracy with patented dual-coil technology

Cutting-edge dual-coil technology bring the tester extraordinary measurement accuracy and good repeatability

Direction sensor inside the probe will compensate the measurement errors in different impact directions automatically

The instrument can measure at any angles. Featuring a built-in direction sensor, the probe can automatically compensate the measurement errors in different impact directions. Multi-angle measurement is easy

Capable of measuring a wide range of metal materials

With 10 built-in metal materials, including steel, alloy tool steel, stainless steel and grey cast iron, the instrument can be used in a wide range of applications and industries to meet the demands of everyday work

Conversions to different hardness scales

LS252C hardness tester provides a variety of hardness scales, which can be converted between Leeb (HL), Vickers (HV), Brinell (HB), Shore (HS) and Rockwell (HRC) eliminating the cumbersome steps of manual table lookup

Impact device is made of Tungsten carbide

LS252C impact device is partly made of Tungsten carbide, and its hardness is almost equal to the diamond

Accurate testing

The instrument is guaranteed to pass the test of the National Institute of Metrology

USB port is used to charge to battery

Using rechargeable lithium battery, the battery can be charged simply from USB port

Dynamic hibernation algorithm, a large-capacity lithium battery power supply

35 hours of continuous operation on a full charge, for long-lasting measurement work

Customer re-calibration allowed

Users can calibrate the standard parts to eliminate the error

Qualifications and Standards

The hardness tester conforms to the following standards:

  • GB/T 13794.1  Metallic materials-Leeb hardness test-Part 1: Test method
  • GB/T 13794.2  Metallic materials-Leeb hardness test-Part 2: Verification and calibration of hardness tester
  • GB/T 13794.4  Metallic materials-Leeb hardness test-Part 4: Tables of hardness values conversion
  • JB/T 9378-2001  Industry standard of Leeb hardness tester
  • JJG 747-1999 Verification regulation of Leeb hardness tester


No. Product Name Quantity Unit
1 Leeb Hardness Tester 1 Set
2 USB data cable 1 pcs
3 Nylon Brush 1 pcs
4 Small support ring 1 pcs
5 User Manual 1 pcs
6 Calibration Report 1 pcs
7 Certificate / Warranty card 1 pcs


  1. What is the thinnest thickness a durometer can measure and what is the thinnest thickness after coupling?

    Leeb hardness tester is only suitable for large and heavy workpieces, small and thin parts must be coupled to a solid support for testing; C-type impact device is measured by the minimum mass of 1.5kg, the minimum thickness of 10mm, if the weight or thickness does not meet the requirements, must be coupled to a solid support for testing, coupled to the minimum thickness of the measured object is 1mm.


Leeb hardness tester can achieve 360° all-round measurement

Guide to integrated handheld Leeb Hardness Tester LS252C

Leeb hardness tester repeatability demonstration

How to calibrate Linshang Leeb hardness tester

Small mass workpiece coupling demonstration

Leeb hardness tester selection



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