Model No. 29 Protractor / angle finder measures inside, outside & slope angles Four-piece sturdy design – with brass lock nut Measures from 0° to 180° in both directions & 0° to 90° on opposite sides Articulating arms make measuring awkward angles easier Made of plastic material Product Description Specs This plastic protractor facilitates measurement & marking of inside, outside & sloped angles. It is ideal for construction jobs, cabinet-making & fine carpentry, where a standard protractor or T-bevel won't fit. Easily mark, measure & transfer angles for woodworking, machining, & other measuring applications. Product Title Overall Size Model # General Tools Plastic Protractor 6" x 2 - 1/2" 29 For California Residents: WARNING: Cancer & Reproductive Harm - www.P65Warnings.ca.gov WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to www.P65Warnings.ca.gov/wood