Size: 7-3/4" X 10-7/8"Material: AluminumGraduations: 1/8"Heavy Duty Aluminum Construction For Durability And LongevityIdeal For Making Repetitive MarkingsFeatures Common, Jack, Hip, and Valley Scales For Various ApplicationsEtched Yellow Graduation Markings Provides Maximum Readability In Various Light ConditionsVersatile Layout Tool With Adjustable Arm Works As A Rafter Square, Try Square, Protractor, Power Saw Guide And More