Introducing the Amaze Tile Ruler Puzzle LL891! This innovative rectangular sliding tile puzzle not only functions as a 15cm (6 inch) ruler with calibrations on the outside edges but also doubles as an engaging puzzle. Its white colour and large print area allow you to print your own design for others to solve, making it perfect for both practical use and interactive fun. Colours Available: White. Materials: Polypropylene. Item Size: 155 x 65mm (LxH).