Phapang pakeng tsa ketane ea 12B le ketane ea 12A

1. Mefuta e fapaneng

Phapang pakeng tsa ketane ea 12B le ketane ea 12A ke hore letoto la B ke la borena 'me le lumellana le litlhaloso tsa Europe (haholo-holo tsa Brithani)' me hangata le sebelisoa linaheng tsa Europe; letoto la A le bolela metric 'me le lumellana le litlhaloso tsa boholo ba litekanyetso tsa ketane ea Amerika' me hangata le sebelisoa United States le Japane le linaheng tse ling.

2. Boholo bo fapaneng

Bophahamo ba diketane tse pedi ke 19.05MM, mme boholo bo bong bo fapane. Yuniti ya boleng (MM):

Diparamitha tsa ketane ya 12B: bophara ba rolara ke 12.07MM, bophara ba kahare ba karolo e ka hare ke 11.68MM, bophara ba shaft ya phini ke 5.72MM, mme botenya ba poleiti ya ketane ke 1.88MM;
Diparamitha tsa ketane tsa 12A: bophara ba rolara ke 11.91MM, bophara ba kahare ba karolo e ka hare ke 12.57MM, bophara ba shaft ya phini ke 5.94MM, mme botenya ba poleiti ya ketane ke 2.04MM.

3. Litlhoko tse fapaneng tsa litlhaloso

Liketane tsa letoto la A li na le karolo e itseng ho li-roller le li-pin, botenya ba poleiti ea ketane e ka hare le poleiti ea ketane e ka ntle lia lekana, 'me phello e lekanang ea matla a sa fetoheng e fumanoa ka liphetoho tse fapaneng. Leha ho le joalo, ha ho na karolelano e totobetseng pakeng tsa boholo bo ka sehloohong le bophahamo ba likarolo tsa letoto la B. Ntle le litlhaloso tsa 12B tse tlase ho feta letoto la A, litlhaloso tse ling tsa letoto la B li tšoana le lihlahisoa tsa letoto la A.