
Usoro nke UC na-ezo aka na ahaziri ahazi, ejiri ọtụtụ ebe Ohiri isi ngọngọ nkeji bọọlụ nwere aka nkwụnye aka. N'ime isi ha bụ bọọlụ nwere oghere dị omimi nke nwere a dayameta mpụta okirikiri (SPB) emebere ka ọ dabara n'ime oghere okirikiri dabara adaba nke ụlọ nkedo. Na-akwado metric akụkụ, A na-ahazi usoro isiokwu a maka ngwa mmepụta ihe na-achọ ikike ibu dị elu, nrụnye kwụ ọtọ, na arụmọrụ a pụrụ ịdabere na ya.
| ISO | UCP312-38 | |
| Nrụpụta Mba. | UCP312-38 | |
| Ebe obibi | P312 | |
| Obere dayameta | d | 2-3/8 n'arọ |
| Ebe mgbago anya gaa na okirikiri etiti. oche diam | h | 3-11/32 nke |
| Ogologo ụlọ | a | 13 in |
| Ebe dị anya n'ịtinye oghere | e | 9-27/32 n'arọ |
| Obosara ụlọ | b | 3-11/32 nke |
| Ntụnye oghere oghere | s1 | 31/32 nke |
| Ogologo oghere nkwụnye | s2 | 1-1/2 n'arọ |
| Ogo ụkwụ ụlọ | g | 1-1/4 nke anụ ọhịa |
| Ogologo ụlọ | w | 6-1/2 n'arọ |
| Obosara mgbanaka dị n'ime | B | 2.7953 nke |
| Anya ihu akụkụ/ebe etiti | n | 1.024 n'arọ |
| Nha Bolt | 3/4 | |
| Ibu ibu | 8,863 n'arọ | |