LS252D Leeb Hardness Tester

New upgraded model of Leeb D probe with fully integrated design

Dual-coil technology
Extraordinary accuracy:±6HL
Perfect for quick and reliable testing on site

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LS252D feature video

LS252D is an advanced state-of-the-art palm sized metal hardness tester which incorporates the impact device and controller into one unit. It easily fits in a pocket. It used lastest dual-coil technology which makes the tester to have extraordinary accuracy: ±6 HL and good repeatability:6HL. It adopts orientation sensors that will compensate the measurement errors in different impact directions automatically to ensure the accurate data, with durable metal housing and OLED display screen. Equipped with impact device D, LS252D is especially suitable for almost any object, polished parts and heat-treated surfaces or the situation requiring a large number of tests. The battery can be charged simply from USB port, also it has a customer re-calibration function.


LS252D handy Leeb hardness tester is suitable for testing the hardness of materials such as steel, cast steel, alloy steel, stainless steel, gray cast iron, ductile iron, cast aluminum alloy, copper-zinc alloy, copper-tin alloy, pure copper and forged steel. The instrument can be widely used in machine tool guides, automotive chassis, heavy workpieces, mold cavities, bearings, pressure vessels and installed machinery or assembly parts and can help manufacturers to carry out product quality inspection and reasonable process analysis.


Parameters Value
Probe Impact device D
Hardness   Scales HL, HV, HB, HS, HRA, HRB, HRC
Measurement   Range HLD: (170-960); HV(83-976);   HB(30-651); HRC(17.6-68.5); HS(26.4-99.5); HRB(13.5-100); HRA(60-85.8)
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
Size 148*34*24 mm
Weight About 68 g
Working Temperature Range -10~50℃,0~85%RH(no condensation)
Storage Temperature Range -10~60℃,0~85%RH(no condensation)


Integrated design, easy operation

Pen-type Leeb hardness tester is lightweight and portable with easy operation

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

LS252D hardness tester provides a variety of hardness scales, which can be converted between Leeb (HL), Vickers (HV), Brinell (HB), Shore (HS) and Rockwell (HRA/HRB/HRC) eliminating the cumbersome steps of manual table lookup

Impact device is made of Tungsten carbide

LS252D impact device is partly made of Tungsten carbide, and its hardness is almost equal to the diamond

USB port is used to charge to battery

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

Customer re-calibration allowed

Users can calibrate the standard parts to reduce the error


Ultra-portable, intelligent Leeb D probe with a clean user-interface


The small hardness tester lets you keep it in your pocket for a more streamlined workflow.


Equipped with standard Leeb hardness standard test block, the user can save the cost of subsequent test block consumables

Qualifications and Standards

LS252D 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


  • Loading: Push down the loading sleeve of the probe to lock the impact body.

  • Positioning: Press the probe firmly against the surface of the object to be measured and keep it still.

  • Measurement: Press the release button on the top of the probe to measure the hardness of the object.





  1. When measuring, the distance between any two indentations should not be less than 3mm, and the distance between the center of the indentation and the edge of the object to be measured should not be less than 5mm.

  2. After use, the impact body should be loosened.

  3. The use of various lubricants is strictly prohibited in the impact device.


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; D-type impact device is measured by the minimum mass of 5kg, the minimum thickness of 25mm, 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 3mm.


Leeb hardness tester repeatability demonstration

Leeb hardness tester can achieve 360° all-round measurement

How to calibrate Linshang Leeb hardness tester

Small mass workpiece coupling demonstration

Leeb hardness tester selection



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