Ukusetyenziswa kwesixhobo:
Isetyenziselwa ukulinganisa amandla afunekayo ukutsala iqhina okanye iluphu enye kwikhaphethi, okt amandla okubopha phakathi kwengqumba yekhaphethi kunye noxhaso.
Hlangana nomgangatho:
I-BS 529: 1975 (1996), i-QB / T 1090-2019, i-ISO 4919 Indlela yokuvavanya yokutsala amandla emfumba yeekhaphethi.
Ilungele uvavanyo lobungakanani bazo zonke iikhaphethi ezilukiweyo.
QB/T1089, ISO 3415, ISO 3416, njl.
Iimpawu zeMveliso:
1, igeyiji yokudayela engenisiweyo, ukuchaneka kunokufikelela kwi-0.01mm.