Alvin Triangle, Adjustable, 8"

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M196330 108C

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Alvin   Provides the features of a 45°/90° adjustable triangle, plus those of a protractor. Angles 0° - 90° can be drawn from baseline (1/2° accuracy). Engraved graduations and aluminum thumbscrew. High impact .100" optically clear acrylic eliminates parallax and allows close pencil tolerance. No inking edge.