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Best Choice MARBIG(R) 
MARBIG(R) 975317B Ruler 30cm Clear Plastic Strong and durableViaky 
3 Pieces Stainless Steel Ruler Viaky Metal Ruler, 12 Inch(30cm) + 8 Inch(20cm) + 6 Inch(15cm),Perfect Straight Edge for 【3 Different Measurement Range Ruler】 6 inch,8 inch and 12 inch suitable for different measuring jobs.Often Used by Carp
Double Sided Stainless Steel Metal Ruler Rule Precision 15cm 20cm 30cm 6" / 150mm / 15cm. 12" / 300mm / 30cm. 8" / 200mm / 20cm. 12", 8" & 6" Stainless Steel Ruler.Best Value Duramax 
Duramax Metal Ruler, 30 cm Size Perfect for a variety of measuring tasks
3D Multi-Angle Ruler Square Protractor DIY Aluminum Alloy for Engineer Carpenter Anodized Surface for Precision: The surface of the square protractor is anodized for enhanced hardness and wear resistanMARBIG(R) 
Marbig Ruler 30cm Colour Fluorescent Colours: Available in blue, green, pink, and purple.YOSOGO 
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SEWING AND QUILTING RULER: Large acrylic ruler for precise measurement, with highlighted seam allowances, easy-to-read mSagaSave Quilting Ruler - Square Transparent Acrylic Non-Slip Fabric Cutting Ruler With Metric Measurements PREMIUM MATERIAL---A clear ruler made from the highly durable Acrylic. 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