A square or triangular ruler and a pen or marker with a rounded tip.

Triangular Ruler And Marker

A "write a review" illustration with a long paper, an ink pen and a star icon. 

Write A Review Illustration With Long Paper And Ink Pen

The tip of a calligraphy pen drawing a thin curvy line.

An outlined drawing or icon of an ink pen inside a rectangular frame. 

A pen tool icon or a pointy tip of a fountain pen.

A fountain pen with a pointy tip lying horizontally.

A vertical poster or advert of a fountain pen or ink pen drawing a curvy line with sparkles.

A quill-style fountain pen and a pot of pen ink.