Ruler with dinosaur illustrations, made in the USA. This is a unique ruler that changes color with body temperature. The parts of the photo that appear to be different colors show how the color has changed. It will also revert to its original color. - Brand: FUJI COSMO SCIENCE CO., LTD. - Size: [Not specified] - Country of Manufacture: USA - Design: Dinosaur illustrations Thank you for viewing. I've forgotten how I acquired it, but because it's a retro item, I haven't been able to find this product currently.