1. Ngā whakatakotoranga rerekē
Ko te rerekētanga i waenga i te mekameka 12B me te mekameka 12A ko te raupapa B he mekameka imperial, ā, e rite ana ki ngā whakaritenga a Ūropi (te nuinga o Peretānia) ā, e whakamahia whānuitia ana i ngā whenua Ūropi; ko te tikanga o te raupapa A he ine, ā, e rite ana ki ngā whakaritenga rahi o ngā paerewa mekameka o Amerika, ā, e whakamahia whānuitia ana i te Hononga o Amerika me Hapani me ētahi atu whenua.
2. Ngā rahi rerekē
Ko te teitei o ngā mekameka e rua he 19.05MM, ā, he rerekē ngā rahi kē atu. Ko te wae uara (MM):
Ngā tawhā mekameka 12B: ko te diameter o te roera he 12.07MM, ko te whānui o roto o te wāhanga o roto he 11.68MM, ko te diameter o te rakau titi he 5.72MM, ā, ko te matotoru o te pereti mekameka he 1.88MM;
Ngā tawhā mekameka 12A: ko te diameter o te roera he 11.91MM, ko te whānui o roto o te wāhanga o roto he 12.57MM, ko te diameter o te rakau titi he 5.94MM, ā, ko te matotoru o te pereti mekameka he 2.04MM.
3. Ngā whakaritenga whakatakotoranga rerekē
He rite te ōwehenga o ngā mekameka o te raupapa A ki ngā roera me ngā pine, he ōrite te matotoru o te pereti mekameka o roto me te pereti mekameka o waho, ā, ka puta te pānga kaha ōrite o te kaha pumau mā roto i ngā whakarerekētanga rerekē. Heoi, kāore he ōwehenga mārama i waenga i te rahi matua me te piko o ngā wāhanga raupapa B. Haunga te whakatakotoranga 12B he iti iho i te raupapa A, ko ētahi atu whakatakotoranga o te raupapa B he rite tonu ki ngā hua raupapa A.
Wā tuku: 24 o Ākuhata-2023