Ts'ebeliso ea li-cettages hangata e itšetlehile ka lisebelisoa tse lumellanang tsa hose kapa kopo. Nakong ea ts'ebetso ea khetho, ho bohlokoa ho nahana ka likarolo tse 'maloa tse loketseng joaloka litšenyehelo, maemo a tikoloho, maemo, mecha ea litaba.

Ho fapana le likhetho tsa rona tsa ho khetha, mefuta ea matshwao e fumanehang e kenyelletsaBPP / BSTT, Jis, Org, Jic, UNF, UN, NPT, SAE, leMetricletoto.

Ka kopo ikopanye le rona bakeng sa lintlha tse ling ka eona.