Breman Precision Stainless Steel Cork Back Ruler (18" Single) Near Indestructible Stainless Steel Ruler. Our metal rulers are rust proof and very durable for long lasting performance. This steel scale ruler will provide maximum precision for years to come making it the best measuring tool for any kind of work. Easy to Read and Precise Etched Standard and Metric Measurement Markings. This Corked back ruler has been precisely etched with standard and metric measurement markings that wont rub off over use and time. No matter the amount of use or time that goes by, our steel 18 inch ruler are ideal for any setting. Durable and Flexible. Our metric ruler is rust proof and is made from stainless steel for durability and is flexible. Able to manipulate over curved surfaces without breaking or damage allowing you more handling and versatility. Cork Back Rulers to Prevent Slipping. Our 18 inch measuring ruler has a cork back feature, preventing your precision ruler from slipping while you work allowing you more efficient handling of your long metal ruler. Hang Up Hole. Our steel empire ruler has a hang up hole on its end allowing you to store your steel ruler conveniently and keep your things organized while you work and make them readily available when needed.