Single- or double-ended multi-section nib marker

A writing instrument, comprising

• a tubular, ink-impermeable body portion containing a plurality of reservoirs that are housed adjacent to each other such that each reservoir is separated from an adjacent reservoir by a reservoir barrier;
• a multi-sectioned nib disposed at one end of the writing instrument, said multi-sectioned nib comprising a plurality of nib sections disposed adjacent to each other, each nib section including a curved marking surface that mates with a curved marking surface of an adjacent nib section to form a continuously curved nib marking end, wherein each nib section is separated from an adjacent nib section by a nib section barrier, the nib sections being secured to each other, and separated by said nib section barrier to form the continuously curved marking end, such that the nib sections do not communicate materials contained therein between adjacent nib sections, and
• wherein opposite ends of the nib sections are spaced from each other and disposed within the tubular body portion such that each nib section is disposed in communication with a different reservoir.