Our updated 15cm ruler now with inches included as well. Made in the UK from rHIPS.b a revolutionary biodegradable & recycled plastic, digitally printed up to full colour. Colourways include: Sand, Sky, Seaweed, Tor & Buoy all suitable for a full colour CMYK print. Made in the UK from rHIPS.b a revolutionary biodegradable & recycled plastic, digitally printed up to full colour. What is rHIPS.b? Its made from recycled polymers including all our waste products with a biodegradable additive, that speeds up the natural biodegradable process of plastic. The material has been tested to ISO 15985 and has ASTM B5511 certification.