Craft Supplies › Aluminium Ruler 30cm with centre ridge cm/inches Aluminium Ruler 30cm with centre ridge cm/inches £1.88 30cm Aluminium Ruler With a centre ridge Get notified by email when this product is in stock. Sign up to receive news and updates. Add To Cart Added! 30cm Aluminium Ruler With a centre ridge Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Liquid Crystal Thermometer EACH £1.98 Glue Spreaders Plastic pack of 50 £7.82 30 cm Bamboo Ruler £1.88 Lino Roller 100mm £4.95 Gelli Plate 8x10 inch each £39.60