Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Papers re. sparking plug, 1917
Blueprint of technical drawing of a spark plug. Annotated by hand in ink.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
Blueprint of technical drawing of a spark plug. Annotated by hand in ink.