30cm 300mm Metric Professional Metal Aluminium Ruler Aluminum Anti Slippery Rule Art Craft Office School Technical Drawing Metric 30cm Professional Metal Aluminium Ruler Anti Slippery Dimensions: 31cm (scale up to 30 cm) x 4cm, Thickness: 5mm Made from silver, anodised aluminium. Precise mm graduated scale. With rubber anti slippery insert. High quality, durable metal ruler for professional applications: technical drawing, art, craft, engineering, architecture. Brand new item supplied in original slide-in wallet for protection against scratches and easy storage.