Bambanci tsakanin sarkar 12B da sarkar 12A

1. Daban-daban Formats

Bambanci tsakanin sarkar 12B da sarkar 12A shine jerin B na daular sarauta kuma sun yi daidai da ƙayyadaddun ƙayyadaddun Turai (mafi yawancin Biritaniya) kuma ana amfani da su gabaɗaya a cikin ƙasashen Turai;Silsilar tana nufin ma'auni kuma ta dace da girman ƙayyadaddun ƙayyadaddun ƙa'idodin sarkar Amurka kuma galibi ana amfani da su a cikin Amurka da Japan.da sauran kasashe.

2. Girma daban-daban

Matsayin sarƙoƙi guda biyu shine 19.05MM, kuma sauran masu girma dabam sun bambanta.Naúrar darajar (MM):

12B sigogi sigogi: diamita na nadi ne 12.07MM, ciki nisa na ciki sashe ne 11.68MM, diamita na fil shaft ne 5.72MM, da kuma kauri daga cikin sarkar farantin ne 1.88MM;
12A sarkar sigogi: diamita na nadi ne 11.91MM, ciki nisa na ciki sashe ne 12.57MM, diamita na fil shaft ne 5.94MM, da kuma kauri daga cikin sarkar farantin ne 2.04MM.

3. Abubuwan buƙatu daban-daban

Sarƙoƙi na jerin A suna da ƙayyadaddun ƙayyadaddun ƙayyadaddun nau'i na rollers da fil, kauri na farantin sarkar na ciki da farantin karfe na waje suna daidai, kuma ana samun daidaitattun ƙarfin ƙarfin ƙarfin ta hanyar gyare-gyare daban-daban.Koyaya, babu takamaiman rabo tsakanin babban girman da farar sassan jerin B.Sai dai ƙayyadaddun 12B waɗanda ke ƙasa da jerin A, sauran ƙayyadaddun tsarin B iri ɗaya ne da samfuran jerin A.