Crack Monitor Accurate ABS Acrylic Standard Tell Tale Crack Gauge Monitor for Corner

Feature: 1. FEATURES: Consists of two plates with overlapping partial lengths. The bottom plate is calibrated in millimeters and the top plate is transparent and marked with a crosshair cursor. 2. SCALE: Has a +/-1 mm (+/-0.04 in) scale on the XY axis with a resolution of +/-0.5 mm (+/-0.02 in). Horizontal range is +/-20 mm (+/-0.79 inches) and vertical range is +/-10 mm (+/-0.38 inches). 3. EASY TO USE: The redesigned mounting post easily secures the two boards together without the need for glue or complicated mounting steps, improving convenience and stability of use. 4. PREMIUM MATERIALS: Crack monitor is made of premium ABS and acrylic materials with excellent durability and stability. At the same time, the choice of materials makes its data easy to read, providing clear monitoring results. 5. FUNCTION: This standard crack monitor for building walls is used to monitor cracks in walls and their evolution over the measuring time, making it a practical and accurate measuring tool. Specification: Item Type: Crack Monitor Material: ABS, Acrylic Weight: Approx. 34g / 1.2oz. Package List: 1 x Crack Monitor (2 Small Parts)4 x Expansion Tube4 x Screw1 x Instruction Manual