Helix Flexible Ruler 15cm Assorted Colours | eBay
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Helix Shatterproof Plastic Ruler | BLICK Art Materials
Helix Dead Steel Folding Ruler - Silver - Length 30cm / 12 inch
Helix Stainless Steel 15" Ruler with Cork Non-Skid Backing | eBay
Helix - Circle Ruler
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Ring Binder Ruler Tinted Helix
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Helix 6" Ruler Shatter-Resistant (Standard & Metric) Brand New (Crystal Blue) | eBay
