InternalGrooveMicrometersThiscalipertypejawfacilitatesquickreadingforinternalgroovesofalltypesincluding O rings,seals,oilgrooves,washergroovesaswellasboresandrecesses.Graduatedin0.01mmincrementsinsizesfrom25mmto150mm.CODERangemmCODERangemmWithoutCounterWithCounter6504515-306504615-3065045225-5065046225-5065045350-75 65045475-100 650455100-125 650456125-150 WithoutCounterWithCounterRangemmRangemm5-30,25-50,50-75,75-100100-125,125-1505-30,25-50