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
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)
Φ12 Longer foot type Length: 18
Outer Dimension (mm) Approx. Width 57×Depth 30×Height 94
Weight (g) 200
Application Semi-rigid rubber, Earthenware clay

Outer Dimension (mm)
A custom designed pressure foot durometer is available according to specimen conditions.
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