Rhino Rulers® Engineer's Scale Folding Ruler by Marshalltown Tools Save Liquid error (product-badge line 32): Computation results in '-Infinity'% $25.50 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Rhino Rulers® are made of washable fiberglass with easy-to-close folding joint design and helps you get accurate measurements. The permanent scales are weather-resistant for long use. Made of washable fiberglass with easy-to-close folding joints Permanent scales are weather-resistant Comes in engineer scale ruler type #16645