• Folding ruler has black markings on yellow, with red stud center markings every 16 inches on the outside face
• Imperial units to 1/16-Inch on one side, brick scale units on the other side for added versatility
• Engraved graduations on both sides
• 90-Degree locking joints for perpendicular measurements
• Stainless steel pin hinges for added strength
• Constructed of tough nylon, reinforced with glass fibers for added durability
• Resistance to weather, abrasion, and most chemicals
• Always wear eye protection

Klein Tools 91163B 6-Foot Brick Fiberglass Folding Ruler is constructed of tough nylon, reinforced with glass fibers for added durability, and resistance to weather, abrasion, and most chemicals. Inch measurements are marked on both edges of the outside faces of the rulers, graduated to 1/16-Inch (1.6 mm). Standard brick scale measurements are marked on the inside faces of the rulers. Graduations are engraved on both sides with brick scale units on the other side for versatility.