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Rotary-Disc Lettering Guideline Template
This is an Ames-style lettering guide: a 120 x 80 x 4 mm frame holding a 65 mm disc that prints in place and turns freely. The disc has three columns of 1.6 mm pencil holes: an even 4 mm pitch, a 3/5 lowercase ratio and a 2/3 ratio. Turn it to an index tick to set guideline spacing at 4, 3.5, 3, 2.5 or 2 mm, then put a 0.5 mm pencil in a hole and slide the frame along a T-square or ruler. The frame's 68° slant edge and 90° edge draw italic and upright slant lines.
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