This 12' (30cm approx) stainless steel ruler from XCut is a 'must have' for any wedding stationery crafter or card maker. With a soft foam backing the ruler makes light of accurate measuring and placing. With a lifetime guarantee (please see docrafts.com) it will be invaluable but do take card as the edge is sharp so it's not suitable for young children and under threes. Invaluable for accurate measuring, cutting, trimming of neat edges. Every crafter needs a good ruler and if you're making your own wedding invitations you'll be surpised how many times you'll need one!