• Bold red and black markings contrast against white or natural pine finishes • Clear, abrasive resistant coating, riveted lock joints, brass plated end clasps and strike plates prevent wear • Graduated slide rule extends up to 6 inches • Slide rule runs underfriction in T-slot and stops at each end to prevent slide from falling out • Marked both sides and both edges • Graduated to 1/16ths of an inch, 16 inch stud centers in red, regular outside markings • Rules with hook the zero falls at inside of hook, for distance measuring • Rules with flat, inside markings; numbering begins on inside of rule. • Wdth In x Lgth Ft=5/8 x 6