This ruler is 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
• Measurements are marked on both sides and both edges, graduated to 1/16th inch
• Black markings on yellow, with red stud center markings every 16 inches
• Engraved graduations on both sides.