JPM Level 9 Inch Hand Level, All Purpose Bubble Level , Contractors Heavy Duty Torpedo Level, 2 Color (Red) Convenient for upside down applications Self aligns on curved surfaces, pipe, and conduit Won't "flip-flop" when used on corners like flat magnetic levels do JPM 9" Magnetic V-Groove Torpedo Level 3 large acrylic high-visibility vials Magnetic V-groove for u