IRHD Micro Hardness Tester - H12

The Wallace H12 Micro Hardness tester allows accurate and repeatable measurements of small thin samples such as O rings.



  • Tests small section samples or O rings
  • One touch fully automatic operation
  • Accurate and consistent results
  • Easy access to sample area
  • Operator dependency reduced


Four models of the H12 are offered
H12/1, the basic model
H12/2, printer model
H12/3, data input terminal and printer model
H12/PC, PC controlled model



Features for all models

The H12 Micro Hardness Tester is available in four different models. The design, the result of considerable consultation with customers, is robust and constructed from aluminium castings which with anti- vibration feet results in exceptional stability.

A major feature of the design is the ease of access in the sample area. A range of Quick Change Tables has been designed to locate different sample cross sections or to locate special jigs and fixtures. After pressing the start button the Micro Hardness Tester operates completely automatically. The result is held on the display at the conclusion of each test.

All versions conform to many National and International Standards.


See the table below for a run-down of this product's specifications.


214mm (w) x 255 (d) x 300 (h)


7.5kg including power supply


Better than 0.2 IHRD


0.395mm diameter ball

Standard Test Time:

Primary Load 5 sec; Secondary load 30 sec


BS 903: Part A26
ISO 48:1994
DIN 53519
ASTM D1415

Sample thickness:

2.0 ± 0.5mm

Software Requirements:

IBM compatible 486 or better. Minimum 4MB RAM. Windows 3.1 or higher. VGA or comaptible graphics card at 600 x 800 resolution. 3MB of hard disk space is required for the program to install and run properly. (Software will not run on Microsoft operating systems after Windows 98 Second Edition.)

Data Terminal Dimensions:

290 mm (w) x 150 (l) x 140(d)



Printer Dimensions:

105 mm (w) x 195 (d) x 90(h)


625g including power supply

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Nhat Minh Equipment & Chemicals Co., Ltd

27/26 H - Hau Giang street - Tan Binh Dist. - Ho Chi Minh city, Viet Nam

Tel: (84)982747436 - Fax: