UltimaPDaa Hairline by Prescott Design is a free geometric sans serif with exceptionally fine, nearly monoline strokes. Its tall capitals favor broad, open shapes and crisp diagonals, and the rounded lowercase forms keep the lettering light and orderly.
It can give fashion branding or cosmetics packaging the spare, precise look of a fine-line drawing, turning the letters into part of the graphic treatment rather than routine product copy. The same restrained construction also suits architecture portfolios and gallery programs, where its clean contours complement plans, diagrams, and minimal photography.
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The font is free for any use, except that you may not sell the font itself to anyone.