STAEDTLER Ruler, 30 cm Length, Double-Sided Scale for Left- and Right-Handed Users, Made of Transparent Plastic, Ruler in polybag, 562 200 PB : Amazon.co.uk: Stationery & Office Supplies
Staedtler Mars Plastic Ruler - 20cm
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Staedtler 30cm Plastic Ruler – First Class Office
Staedtler Plastic Ruler - 15cm (Pack of 2) | 562 152 PB | The Online Pen Company
Staedtler mars plastic ruler 20cm/200mm rule : Amazon.co.uk: Everything Else
Aluminium Ruler 50cm**^ - Stationery & Pens from Crafty Arts UK
Staedtler Mars Plastic Rule 30cm
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Staedtler Mars Metal Rulers
Staedtler Mars Plastic Ruler - 30cm | 562 04-30S | The Online Pen Company
Staedtler Mars Metal Ruler - 20cm | 563 20 | The Online Pen Company