Hunhu hwavo hunosanganisira:
Simba guru: Njanji dzinowanzogadzirwa nesimbi yepamusoro-soro, ine simba guru uye kuomarara uye inogona kutsungirira kumanikidzwa kwakanyanya uye kukanganiswa nezvitima. Kugona kusundira: Njanji dzinogona kubatanidzwa muzvikamu zvirefu kuburikidza nekusundira, izvo zvinovandudza kugadzikana kwese uye kuchengetedzeka kwenjanji.
Maitiro ezvitimazvinowanzo gadziriswa neInternational Organisation for Standardization (ISO) pamwe nezvinodiwa neindasitiri yechitima munyika imwe neimwe. Heano mamwe emitemo yechitima yakajairika:
Njanji yeSimbi yeGB Standard, njanji yesimbi yeAREMA yakajairika, njanji yesimbi yeASTM yakajairika, njanji yesimbi yeEN yakajairika, njanji yesimbi yeBS yakajairika, njanji yesimbi yeUIC yakajairika, njanji yesimbi yeDIN yakajairika, njanji yesimbi yeJIS yakajairika, njanji yesimbi yeAS 1085, njanji yesimbi yeISCOR.
Nguva yekutumira: Kubvumbi-03-2024