mechanical pencil

US /məˌkæn.ɪ.kəl ˈpen.səl/
UK /məˌkæn.ɪ.kəl ˈpen.səl/
"mechanical pencil" picture
1.

porte-mine, crayon mécanique

a pencil in which the graphite lead is held in a retractable or replaceable mechanism rather than being sharpened

:
I prefer using a mechanical pencil for drawing because of its consistent line thickness.
Je préfère utiliser un porte-mine pour dessiner en raison de l'épaisseur constante de son trait.
He clicked the top of his mechanical pencil to extend the lead.
Il a cliqué sur le haut de son porte-mine pour faire sortir la mine.