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Double-Sided 4-ft. x 4-ft. Write & Wipe Polar Board
Product Number: Z30934
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This heavyweight 24-lb. board is framed in aluminum and come equipped with hangers on both sides. One side shows radians, the other side is blank. Meridian rays make 15° angles, outer circle graduated in 5° units, concentric circles 2-1/2 in. apart, outer circle with 40-1/2 in. dia., and bold main axes. May be hung from hooks or set in an existing chalkboard chalk tray. Background surfaces are white with black grids and printing. Allow extra delivery time.
*NOTE: Use only dry-erase markers.