Air Permeability Imitha
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                DRK121 Air Permeability Meter
Imitha yokungena komoya yeGurley yindlela eqhelekileyo yovavanyo lwe-porosity, ukungena komoya, kunye nokuxhathisa komoya kwezixhobo ezahlukeneyo. Ingasetyenziswa kulawulo lomgangatho kunye nophando kunye nophuhliso kwimveliso yephepha, ilaphu, ilaphu elingalukwanga, kunye nefilimu yeplastiki. -              
                American Gurley Gurley 4110 Air Permeability Meter
Imitha yokungena komoya yeGurley yindlela eqhelekileyo yovavanyo lwe-porosity, ukungena komoya, kunye nokuxhathisa komoya kwezixhobo ezahlukeneyo. Ingasetyenziswa kulawulo lomgangatho kunye nophando kunye nophuhliso kwimveliso yephepha, ilaphu, ilaphu elingalukwanga, kunye nefilimu yeplastiki. 
         