
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 | UCP307-20 | |
| Nrụpụta Mba. | UCP307-20 | |
| Ebe obibi | P307 | |
| Obere dayameta | d | 1-1/4 nke anụ ọhịa |
| Ebe mgbago anya gaa na okirikiri etiti. oche diam | h | 1-13/64 nke |
| Ogologo ụlọ | a | 8-9/32 n'arọ |
| Ebe dị anya n'ịtinye oghere | e | 6-5/16 nke |
| Obosara ụlọ | b | 2-13/64 nke |
| Ntụnye oghere oghere | s1 | 43/64 nke |
| Ogologo oghere nkwụnye | s2 | 31/32 nke |
| Ogo ụkwụ ụlọ | g | 25/32 nke |
| Ogologo ụlọ | w | 4-3/16 nke |
| Obosara mgbanaka dị n'ime | B | 1.8898 n'arọ |
| Anya ihu akụkụ/ebe etiti | n | 0.748 n'arọ |
| Nha Bolt | 1/2 | |
| Ibu ibu | 2,439 n'arọ | |