
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 | UCT308 | |
| Nrụpụta Mba. | UC308 | |
| Ebe obibi | T308 | |
| Obere dayameta | d | 40 mm |
| Ogologo oghere mgbakwunye | o | 22 mm |
| Ọgwụgwụ mgbakwunye ogologo | g | 19 mm |
| Elu nke mgbakwunye njedebe | p | 83 mm |
| Elu nke oghere mgbakwunye | q | 50 mm |
| Dayameta nke mgbakwunye bolt oghere | s | 32 mm |
| Ogologo uzo piloting | b | 89 mm |
| Obosara uzo piloting | k | 18 mm |
| Ịgba elu | e | 112 mm |
| N'ozuzu elu | a | 124 mm |
| N'ozuzu ogologo | w | 162 mm |
| N'ozuzu obosara | j | 50 mm |
| Obosara oghere | l | 34 mm |
| Ebe dị anya site na njedebe ihu ruo na ahịrị etiti nke dayameta oche okirikiri | h | 100 mm |
| Obosara mgbanaka ime | B | 52 mm |
| Center of Bearing from End | n | 19 mm |
| Ibu ibu | 2.9 n'arọ | |