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40 cm total length Double line spacing: 5mm & 2.5mm Durable 3mm thick clear acrylic with engraved markings Grading lines along one edge 45 degree angle for bias
40 cm total length Double line spacing: 5mm & 2.5mm Durable 3mm thick clear acrylic with engraved markings Grading lines along one edge 45 degree angle for bias