Review by Tina Koyama Back in the day, graphic designers and printers used “non-photo blue” pencils. Certain shades of blue that could not be detected by camera film (or copy machines), so rough dr…
Review – Caran d'Ache Sketcher (Non-Photo Blue Pencil)
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Pencil Review: Non-Photo Blue Pencils - The Well-Appointed Desk
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