日本得樂TECLOCK橡膠硬度計GS-703NJISK6301whichhadbeenestablishedin1950andsustainingthebaseofrubberindustryinJapanwasdiscontinuedin1998afterthesuspendedperiod,asitwasnotinconformitywithISO,andJISK6253wasnewlyestablished.However,itwasusedfor50yearsasrubberhardnessmeasurementandisstillusedastestdataagreedbetweenconcernedpersonsevennowwhenitisprogressedtoshifttonewJISandthestandardisdiscontinued.Thereare2kindsofAtypeforgeneralrubberandCtypeforhardrubber.GS-703N