日本得乐TECLOCK橡胶硬度计GS-750GASTM(AMERICANSOCIETYFORTESTINGANDMATERIALS)washistoricallyoldandvarioustypesofdurometerareruled.ISOappliesdurometeroftypeAandTypeDamongthisstandardandtheyareruledinJISstandard.TECLOCKprovidesallofthisASTMdurometerfortheusageofhardtypematerialtoultrasofttypematerialinourlineup.PleaseselectaccordingtousageinadditiontotypeAandTypeD.