I.Oloa Folasaga:
O le oloa e aofia ai se faʻataʻitaʻiga faʻavae ma le sefulu eseese faʻapitoa o le nofoaga tutotonu, talafeagai mo le (0.1. 0.58) MM Courf, e mafai ona suia i le tele o nofoaga o le mafiafia. Lautele faʻaaogaina i luga o pepa faʻapipiʻi, afifiina ma oloa lelei le siakiina ma asiasiga alamanuia ma matagaluega. O le pepa faʻapitoa mo le faʻataʻitaʻia o le mama o le malosi o le pepa ma pepa malo.
U Nu.1 0.100-0-0.140 mm
U Nu.2 0.141-0.170 mm
U Nu.3 0.171-0.200 MM
U Nu.4 0.201-0.230 mm
u Nu.5 0.231-0.280 mm
U Nu.6 0.281-0.320 mm
U Nu.7 0.321-0.370 mm
U Nu8 0.371-0.420 mm
u Nu.9 0.421-0.500 mm
u Nu.1 0.501-0.580 mm