The slopes Measuring Ruler combines powerful adhesive with high accuracy angles detection, offering fast attachment to ferrous surfaces and accurate ±0.1° measurements for professional construction applications Engineered with industrial grade neodymium magnets and markings, this angles finder ensures long term measurement consistency across wet / dry conditions without electronic components Featuring an integrated angles conversion chart and ABS erosion resistant housing, this mechanical inclinometer requires not batteries while maintaining waterproof durability in harsh environments Perfect for aligning HVAC ducts on steel frameworks, adjusting scaffold platforms, or verifying roof angles during installation and maintenance operations Ideal for civil engineers, metalworkers, and enthusiasts requiring stable slopes measurement in construction site, metal fabrication workshops, or home renovation projects, Manufacturer: LIbgiubhy