Mr. Pen machinist rulers come in a set of three, each 6 inches long, designed for precision with markings for 1/64, 1/32 inches, and millimeters, including fine .5 mm increments. | These rulers are constructed from high-quality stainless steel, ensuring long-lasting durability and resistance to corrosion, making them suitable for any workshop or technical environment. | The rulers feature etched markings that are clear and easy to read against the steel background, providing accurate measurement for professional and DIY projects alike. | Ideal for a range of applications, from engineering and drafting to general household use, these rulers provide versatility with their metric and imperial measurement scales. | With three rulers included, you can have one for the workshop, one for the home office, and one for your portable tool kit, ensuring you're always prepared.