Rula

Rula (kutoka Kiingereza "ruler") ni kifaa kinachotumika kupima urefu. Kizio cha kawaida cha kupima urefu ni Mita (m).

Hata hivyo, mita si kizio pekee cha kupima urefu, kuna vizio vingine kama vile Kilometa, sentimeta, Milimita na vilevile Maili n.k. ambayo hutumika kupika urefu^[1][2].

1. ↑ https://en.wikipedia.orgview.php?sq=PHP&lang=sw&q=Measure
2. ↑ https://en.wikipedia.orgview.php?sq=PHP&lang=sw&q=Ruler