Description: Solid Multifunctional Ruler: This portable multifunctional ruler is waterproof and rust resistant, solid that won't deform over time Precision Measurements: The ruler measures approximately 53cm in length, 2.8cm in width, and 0.5cm in thickness with a hardness of around 60 using a 2CR13 steel plate material. It features a scale from 0 to 50cm for accurate measurements Clear Engravings: The double sided engraving ensures clear scale that won't fade over time, making it suitable for learning, mechanical work, technical drawing, and architectural use. Stainless Steel Material: Made of quality stainless steel for long term durability and reliability Package Includes: Each package comes with 1 piece of this versatile ruler Specification: Material: Stainless steel Size Chart: Length: 53 cm/20.87 inch Width: 2.8 cm/1.10 inch Thickness: 0.5 cm/0.20 inch Package Includes: 1 Multifunctional Ruler Note: Please allow slightly errors 1-2cm differences due to manual measurement.