Details
Clear plastic construction. The 360° protractor head has scales calibrated to be used with the ISOM (International Standards of Measurement) system. This high resolution model has a white background behind the numbers and lines that assures a high contrast for added readability. Reads 0 ̊ to 90 ̊ and 0 ̊ to 180 ̊ in 1 ̊ increment. Both arm have a linear scale in inches and centimeter 8 inches (20cm) long.
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