OHK-1600 Dial Durometer The Analog Complete O-Ring Hardness Kit is the most convenient and accurate way to perform repeatable hardness (durometer) testing on thin materials - as thin as .050". Features: Model 1600-M - Type M Durometer with Certification Model OS-3 - Air Dampened Operating Stand Model ORF-1 - O-Ring Fixture Kit Model TBK-A Type A/M Test Block Kit with Certification Conforms to ASTM D-2240

OHK-DD-4 Digital Durometer The Digital Complete O-Ring Hardness Kit is the most convenient and accurate way to perform repeatable hardness (durometer) testing on thin materials - as thin as .050". Features: Model DD-4-M - Type M Durometer with Certification Model OS-3 - Air Dampened Operating Stand Model ORF-1 - O-Ring Fixture Kit Model TBK-A Type A/M Test Block Kit with Certification Conforms to ASTM D-2240