Klein Tools' Fiberglass Folding Rules are constructed of tough nylon, reinforced with glass fibers for added durability, and resistance to weather, abrasion, and most chemicals. Measurements are marked on both sides and both edges, graduated to 1/16-Inch (1.6 mm). Graduations are engraved on both sides.

• Black markings on yellow, with red stud center markings every 16 inches
• Measurements are marked on both sides and both edges, graduated to 1/16-Inch
• Engraved graduations on both sides
• Constructed of tough nylon, reinforced with glass fibers for added durability, and resistance to weather, abrasion, and most chemicals
• Positive locking joints and stainless steel spring hinges for added strength