Ideal for marine engineers, architects, and laboratory technicians who demand sturdy, rusts proof measuring instrument in humid or demanding environment Crafted from resistant stainless steel, this 2mm thick ruler features round and square holes for multifunctional marking, hanging, or securing in professional workflows for construction site, academic laboratory, and fieldwork with its lightweight design, replacing traditional rulers in mobiles workspaces Combines industrial grades durability with portability, maintaining measurement integrity across decades of use while fitting seamlessly into toolkit for professional Accurate engineered stainless steel ruler with double hole design ensures accurate measurements under 0.5mm error, perfect for engineers and designers requiring efficient calibration tool, Manufacturer: ERRORY