Introductory text on why this product is a good purchase. Has a scale of ±1 mm (±0.04 inches) on the XY axis with a resolution of ±0.5 mm (±0.02 inches). Horizontal range of ±20 mm (±0.79 inches) and vertical range of ±10 mm (±0.38 inches). Redesigned installation column for easy mounting without glue. Consists of two discs with overlapping lengths. The crack meter is made of high-quality materials for durability and stability. Transparent top plate with crosshair cursor for accurate measurements. Used to monitor cracks in walls and their development. Advantages: Easy to use. Clear monitoring results. Practical and accurate measuring instrument. This standard crack meter for building walls improves ease of use and stability thanks to the simple mounting without glue. The materials ensure clear monitoring results and durability, making it a practical measuring instrument for crack monitoring. Product specifications: Scale: ±1 mm (±0.04 inches) XY axis, ±0.5 mm (±0.02 inches) resolution. Range: Horizontal ±20 mm (±0.79 inches), Vertical ±10 mm (±0.38 inches). Material: ABS and Acrylic. Use: Monitoring of wall cracks. Show more product information