<prompt> Bheka isiqephu esingezansi bese uphendula umbuzo ngokulandelayo ngolimi olufanayo nesiqephu: Isiqephu: Ubukhulu obujwayelekile kanye nendawo evame kakhulu yokugcwalisa izimbobo ezifakwe ephepheni yi-International Standard ISO 838. Izimbobo ezimbili ezinobubanzi obungu-60.5 mm zigoqwe ephepheni. Izikhungo zalezi zimbobo ziyi-800.5 mm ngokwahlukana futhi zinobude obungu-121 mm emaphethelweni aseduze ephepha. Izimbobo zitholakala ngokulingana maqondana ne-eksisi lekhasi noma idokhumenti. Umbuzo: Yisiphi isilinganiso esivame kakhulu lapho kugcwaliswa izimbobo ephepheni?  <response>: Izinga lamazwe omhlaba i-ISO 838 