Standard (otu osisi)
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Otu ọkọlọtọ ma ọ bụ ọkọlọtọ otu narị bụ ihe atụ nke osisi eji eme azụmahịa.
Ụkpụrụ ahụ dịgasị iche na ọnụ ọgụgụ, nha na ihe mejupụtara site na mba ruo mba nihi ya, okwu ahụ naaga nihu site na mpaghara ma ọ bụ ọdụ ụgbọ mmiri. Mba ndị dị na mpaghara Baltic bụ ndị isi naemepụta ma naebupụ osisi, ya mere, a naeji ụkpụrụ ha eme ihe na azụmahịa na mba ndị ọzọ dị ka Britain. Otu narị niji ya eme ihe naabụkarị otu narị ogologo, nke pụtara 120, mana enwere ike iwepụ okwu otu narị. A gaakpọkarị osisi ahụ battens (7 sentimita nobosara), deals (karịa 7, naabụkarị sentimita 9 nobobosara) na planks (11 sentimita n"obosara); bọọdụ dị n'okpuru sentimita 2 nobesara.
Otu narị nke isi obodo Russia nke Saint Petersburg bụ 120 bọọdụ nke dị mita 12 nogologo, 11⁄2 sentimita nobosara na 11 sentimita n"obosara - olu nke 165 cubic feet. Obodo ahụ gbanwere aha ya ka ọ bụrụ Petrograd mgbe Agha Ụwa Mbụ malitere na 1914 ya mere a maara otu ahụ dị ka Petrograd Standard ma ọ bụ PSH (Petrograd Standard Hundred). Otu a jikwa mkpụrụ okwu Petersburgh mee ihe.
Ụkpụrụ Christiania bụ 5/8 nke ọkọlọtọ Petersburg, naeme ka ọ bụrụ 103.125 cubic feet.
Otu narị ọkọlọtọ Swedish bụ bọọdụ 121 nke dị mita 14 nogologo, sentimita 3 nobosara na sentimita 9 n'obogologo, naeme 317,625 cubic feet.
Otu narị ọkọlọtọ Norwegian bụ 120 bọọdụ nke 12 feet ngologo, 3 sentimita nobosara na 9 sentimita nobosara, naeme 270 cubic feet.
Otu narị ọkọlọtọ nke Britain maka battens bụ 120 battens nke 12 feet nogologo, 21⁄2 sentimita nobosara na 7 sentimita nobosara, naeme 175 cubic feet.
Otu narị nke Quebec bụ 100 bọọdụ nke 12 feet nogologo, 21⁄2 sentimita nobosara na 11 sentimita nobosara, na-eme 275 cubic feet.
Nkwekọrịta maka oche a naere nọdụ ụgbọ mmiri Danzig na Memel bụ osisi dị mita 40 nogologo, sentimita 3 nobosara na 1 ụkwụ nobobosara. Otu narị nke 120 ga-abụ 1200 cubic feet.
Osisi bụ ihe dị mkpa maka Britain na Agha Napoleon metụtara ihe ahụ. North America nọchiri Scandinavia dị ka isi iyi na ọnụ ọgụgụ ahịa kwa afọ na ụkpụrụ noge a gbanwere dị ka ndị a (ụkpụrụ kwa afọ):
| Afọ | Baltic | Ebe Ugwu America |
|---|---|---|
| 1788-92 | 73,132 | 866 |
| 1803-07 | 77,392 | 5,511 |
| 1829-33 | 40,927 | 134,227 |
Hụkwa[dezie | dezie ebe o si]
- Ụkwụ bọọdụ
- Ogwe osisi a tụkọtara ọnụ
- Ndepụta nke ihe ndị na-atụle ihe