Umahluko osisiseko phakathi kombhobho womoya oxinanisiweyo kunye netyhubhu yomoya oxinanisiweyo yindlela echazwa ngayo ububanzi.Umbhobho ulinganiswa ngedayamitha yangaphakathi ngelixa umbhobho ulinganiswa ngedayamitha engaphandle.Njengomzekelo, i-3/8 "ye-hose yomoya ecinezelekileyo inomlinganiselo ongaphakathi we-3/8".