Description: Multifunctional bevel protractor declinometer: slope, horizontal and vertical Exquisite workmanship, clear and accurate scale Large blister measurement, clear and high precision With spiral wheel, for correcting the bubble in the spirit level Applications: civil engineering, interior finish, and other engineering working involved slope, horizontal or vertical measuring Specification: Type: Nonmagnetic Material: ABS Plastic Main Color: Black Overall Width: Approx. 125mm/ 4.92 inch Overall Length: Approx. 250mm/ 9.84 inch Package Includes: 1 Piece of Nonmagnetic Bevel Protractor Declinometer