accuracy measurement with the Miniature Folding Ruler Keychain, featuring a convenient design that unfold to 50cm, for quick and accurate measurements Crafted from , this lightweight ruler boasts a 10 with clear metric scale for various measurement needs Ideal for engineers, designers, craft enthusiasts, and anyone requiring precise measurements in their daily tasks for home renovations, outdoor activity, and office measurements, this folding ruler adapts effortlessly to various scenario Its water resistant and scratch proof construction ensures durability, making it a efficient tool for both professional and casual users