
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 | UCPH208-25 | |
| Nrụpụta Mba. | UC208-25 | |
| Ebe obibi | PH208 | |
| Obere dayameta | d | 1-9/16 nke |
| Ebe mgbago anya gaa na okirikiri etiti. oche diam | h | 3-15/16 nke |
| Ogologo ụlọ | a | 7-1/64 nke anụ ọhịa |
| Ebe dị anya n'ịtinye oghere | e | 5-13/32 n'arọ |
| Obosara ụlọ | b | 2-3/4 nke anụ ọhịa |
| Nha Bolt | S | 1/2 |
| Ntụnye oghere oghere | S1 | 43/64 nke |
| Ogologo oghere nkwụnye | S2 | 53/64 nke |
| Ogo ụkwụ ụlọ | g | 3/4 nke anụ ọhịa |
| Ogologo ụlọ | w | 5-29/32 n'arọ |
| Obosara mgbanaka dị n'ime | B | 1.937 n'arọ |
| Anya ihu akụkụ/ebe etiti | n | 0.748 n'arọ |
| Ibu ibu | 2,41 n'arọ | |