inspection glass,plexiglass tube /INDUSTRY-CHEM/
[DE] Plexiglasrohr; Schauglas
[EN] inspection glass; plexiglass tube
[FR] tuyaux d' inspection; tuyaux en plexiglas
blue glass,green glass,inspection glass /INDUSTRY,INDUSTRY-CHEM/
[DE] Ofenschauglas; Schauglas
[EN] blue glass; green glass; inspection glass
[FR] verre bleu; verre d' observation