<page_title> Tube socket </page_title> <section_title> Summary of base details </section_title> <table> <cell> Duodecar <col_header> Common Name </col_header> <col_header> Pee-Wee </col_header> <col_header> Mazda subminiature </col_header> <col_header> European 3-pin </col_header> <col_header> UV4 </col_header> <col_header> UX4 </col_header> <col_header> B4 </col_header> <col_header> UY5 UX5 </col_header> <col_header> B5 </col_header> <col_header> UX6 </col_header> <col_header> B7 </col_header> <col_header> UX7 </col_header> <col_header> Miniature 7-Pin </col_header> <col_header> Transcontinental </col_header> <col_header> Octal </col_header> <col_header> Mazda Octal </col_header> <col_header> Loctal </col_header> <col_header> Rimlock </col_header> <col_header> Loctal-9pin </col_header> <col_header> Noval (Miniature 9-pin) </col_header> <col_header> Magnoval </col_header> <col_header> Novar </col_header> <col_header> Decal </col_header> <col_header> Decar </col_header> <col_header> Sub-Magnal </col_header> <col_header> DuoDecal </col_header> </cell> <cell> B12C <col_header> Standard Name </col_header> <row_header> Duodecar </row_header> </cell> <cell> 12 <col_header> Base Pins </col_header> <row_header> Duodecar </row_header> </cell> <cell> 19.1mm (3/4") circle, 11x 27.7° then gap between pins 12 & 1 <col_header> Pin Layout </col_header> <row_header> Duodecar </row_header> </cell> </table>
The Duodecar B12C base has 12 pins in a 19.1 mm diameter circle.