Robert Oster bottle ink, Black is Black, 50ml Signature Collection With a ruler

With a ruler

setting the design standard for the rest of the collection with its principle of ‘form follows function'

or IC 50 disposable cartridge

spring-loaded clip for secure attachment

Robert Oster bottle ink, Black is Black, 50ml Signature Collection With a rulerRobert Oster Signature Ink Collection Crafted in South Australia, the Robert Oster Signature Collection showcases the creators most iconic and expressive colours. Inspired by the Australian landscape, each ink is blended with care to deliver smooth flow, rich shading, and vibrant personality on the page. This flagship collection features the full spectrum of Robert Osters artistic vision from calm, earthy tones to bold, energetic hues offering writers