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red pencil

Nannostomus mortenthaleri

Classification

A blue pencil, also known as a checking pencil, is a two-color pencil traditionally used by an editor to correct a written copy. The blue end is typically Prussian blue, and the red end is typically a warm vermilion. They are most often half red and half blue, but some are 70% red and 30% blue.

Distribution

(c) Brian Gratwicke, some rights reserved (CC BY) · CC-BY
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Countries in the Picchu catalog
Peru · 4