Specification :

� " H Button" : Catching and holding the value in testing
� " OFF/ ON Button" : Power off and Power on
� " ZERO Button" : Zero the value

I.Introduction:
A Durometer
It is designed for testing the hardness of soft rubber, printer roller and other elastomer material.( ASTM--D--2240)
D Durometer
It is designed for testing the hardness of hard rubber, such as: thermoplastic plastics, bowling, plastic floor and so on.( ASTM--D--2240)
C  Durometer
It is designed for the hardness of soft and elasticty material, spinning trunk rotation and soft grain structure materials.( ASTM--D--2240)

II.Parameters:
  Model   Force Pressure  Shape of measuring head    Length of Probe Dial Scale 
  A   8.1N   1Kg Top angle( 35angle)   2.5mm 0-100mm

  D   44.5N   5Kg   Top angle( 30angle)   2.5mm   0-100mm

  C   8.1N 1Kg   Spheric radius2.38mm 2.5mm    0-100mm

III.Notice:
1) .Thickness of test specimen  > 6mm, no more than 3  layers;   Test area > / = feet area( diameter 18mm) .   
2) .Test 3 times and calculate the average as  test result.
3) .Usually, plz use A/ D.When the hardness of A > 90, plz use D or C.