Manual Level And Transit Package, 20x Power, Accuracy Plus Or Minus 1/4 Inch Per 100 Feet, Working Range 200 Feet, Water Resistant Seal, Base 4 Inch Diameter With 5/8-11 Threads, 0-360 Degree Horizontal Circle And 0-45 Degree Vertical Arc Vernier Reading At 1 Degree Graduations, Includes Case, 8 Foot Aluminum Grade Rod And Tripod, Used In Grading, Leveling Foundations, Installation Of Pools And Decks