Magnetic attachment for secure, hands angle measurement on metal surfaces The builtin strong magnet securely fastens to metal workpieces, providing stable, hands angle measurement during construction and woodworking while reducing measurement drift. Dual measurement modes with precision Switch easily between relative and absolute measurement modes. 0.05° resolution for accurate angle finding and slope calculations across a range of tasks from framing to plumbing installations. Instant angle and slope conversion with precision Convert instantly between degrees and percentage slope readings. Conversion accuracy within ±0.1°, simplifying roofing, drainage, and mechanical installations without manual math. Data hold and easy reading in challenging conditions Freeze measurements on a bright LCD display using the hold function. Record angles accurately even in awkward positions or lowlight environments, improving productivity. Key benefits and practicality Reliable magnetic attachment provides stable measurements on metal surfaces, reducing drift and error. Flexible use with two measurement modes supports a variety of tasks from layout to installation. Quick, precise conversions remove calculation steps, speeding up complex projects. Hold function ensures readable, recordable data in difficult working conditions. Use scenarios Framing and carpentry: securely measure angles on metal studs or fixtures, then lock readings for repeat cuts. Plumbing and drainage: find and verify slope percentages and angles for piping layouts with quick conversions. Roofing and mechanical installations: perform precise degree readings and slope checks, then hold values for documentation in tight or elevated spaces.