... to the vacuuming andhermetically copper sealed register, which the reading is made.Compliance with Standard:--Technical data confirms to ... Class B Standard for horizontal installation.Attachment:--With every water meter(threaded ends), there are 2 couplings, 2 coupling nuts ... , 2 coupling gaskets and 2 spud thread protectorsIndication:--Cubic meter(m3) for selecting. Feature:--Multi-jet, dry-dial, ...