Ukumelana nokushelela kwentambo endwangwini elukiwe kwalinganiswa ngokungqubuzana phakathi kwe-roller nendwangu.
GB/T 13772.4-2008
1. Idivayisi yokudlulisa ilawulwa yinjini yokunyathela enembile.
2. Isibonisi sesikrini sokuthinta umbala, ukulawula, isikhombikubona sesiShayina nesiNgisi, imodi yokusebenza kwemenyu
1. Isiqeshana sesampula: ubude obungu-190mm, ububanzi obungu-160mm (usayizi wokubopha osebenzayo ongu-100mm × 150mm)
2.Ubude bebhokisi bungu-500mm, ububanzi bungu-360mm, ukuphakama kungu-160mm
3. Isivinini sokunyakaza: izikhathi ezingu-30 ngomzuzu
4. Ukushaya kweselula: 25mm
5. Ububanzi be-roller yerabha obungu-20mm, ubude obungu-25mm no-50mm ngokulandelana, ubulukhuni be-shore obungu-55° -60°