BRAND : ASKER (Made in Japan)


The ASKER Durometer Type B for semi-rigid rubber (from normal hardness to high hardness), as specified by ASTM D2240

It is used for measuring harder specimens, such as earthenware clay or mossed pottery, than the Type A durometer, because the indentor
Height: 2.50mm Shape: Sharp Cone Point
Pressure foot
The Pressure foot in contact with the specimen is 44mm in width and 18mm in depth, wide enough to ensure accurate measurement. The Longer Pressure Foot Type (B type)is applicable for measurement of narrow or concave specimens.
Hardness Tester Selection Chart
Our product line consists of various types of durometers applicable to specific materials
as indicated in the chart above.

Type A Durometer (ASKER A type), conforming to JIS K 6235 is the most popular type of durometer for measuring rubber hardness.

However, verification is recommended because a significant difference is estimated to be the largest when a durometer indicates measurement values from 10 to 90 points.

For hard specimens for which Type A Durometer readings indicate more than 90 points, measurements should be undertaken using the Type D Durometer (ASKER D type). However, for soft specimens with measurements of less than 20 points, the ASKER C type or Type E Durometer (ASKER E type) should be used. The most important consideration in using durometers is to select the correct type for purposes of measurement according to the specimen.

Standards ASTM D 2240
Indication range 0 point - 100 point (262 degree dial scale)
Minimum indication 1 point (Accuracy : ±1 point)
Indentor Design (mm) Height: 2.50 30°Angle Sharp Cone Point Tip Radius 0.1
Spring Forces [mN(g)]
0 point: 550(56)
100 point: 8050(821)
Central hole of diameter of Pressure foot Φ3
Pressure foot
Dimension (mm)
Outer Dimension (mm) Approx. Width 57×Depth 30×Height 76
Weight (g) 200
Application Semi-rigid rubber, Earthenware clay

Outer Dimension (mm)
A custom designed pressure foot durometer is available according to specimen conditions.
Visitors: 56,992