- Innovative features: The grout monitor uses a transparent top plate and double plates to enable precise tracking of opening and closing joints. Accurate data is logged on the included log sheet via the thin wire cursor and the removal of two nails. - High precision and range: Delivers 0.5 mm (0.02 inches) resolution with a horizontal range of 20 mm (0.79 inches) and a vertical range of 10 mm (0.38 inches). It features an XY axis scale of 1 mm (0.04 inches) and a scale wire to support high accuracy. - Easy to use: Improved stability and a user-friendly design with newly designed mounting posts. Precise placement is achievable without glue or complex assembly steps. Attach two plates to each other easily and conveniently. - Advanced materials and durability: Made of high-quality ABS and acrylic materials that ensure excellent durability and stability. Material selection supports easy data reading. - Practical use scenarios: - Tile installation projects: ensure uniform grout joints across floors and walls by precisely tracking joint openings and closings. - Bathroom or kitchen renovations: verify consistent grout spacing along countertops and full-height tiled areas. - Workshop alignment: calibrate multi-tile layouts and fixtures to maintain identical grout lines across repeated installations.