Ruler 30 cm (12 inch) Metal Craft Safety Ruler, Light Weight with a Folding Safety Guard. Centimeters and Inches. Use with Craft Cutting Mat, Craft Cutter, Rotary Cutter,Stanley or Xacto. : Amazon.co.uk:
A4 3 Sheet Cutting Ruler and Mat – Cathedral Products
Jakar 60cm Cutting Ruler with Stainless Steel Edge - Stationery & Pens from Crafty Arts UK
Ruler Trimmer with Cutter From 6.00 GBP | The Works