noun
stitching chisel; pricking iron; multi-prong punch for leather-craft
A leather-craft tool with multiple diamond-shaped prongs used to mark or punch stitching holes evenly.
革に縫い穴をあけるために菱目打ちを使う。
I use a stitching chisel to punch sewing holes in leather.
この菱目打ちは四本目で、等間隔に穴が開けられる。
This pricking iron has four prongs and can make evenly spaced holes.