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12-inch Flexible Mood RulerClean Efficient Natural Gas Ruler12" Energy Conservation Ruler6" Energy Conservation RulerEnergy Efficiency World™ 12" Ruler
Energy Efficiency Ruler - Imperial & Metric UnitsSave Energy Flexible RulerKids Energy Conservation Mood RulerSchool Supply Kit12" Recycled Plastic Ruler
Fold 'Em Ruler12" Energy Efficiency Dual Scale Ruler with LED Twist12" Energy Efficiency Ruler with LED Twist