1. Precise Monitoring: The monitor features two panels with a transparent plate, enabling the cursor to move relative to the calibration scale. When a gap opens or closes, two nails are removed, and the thin wire cursor is recorded on the included gap log sheet, showcasing its ingenious design. 2. Improve Your Measurements: Enjoy enhanced accuracy with our joint gauge, offering a resolution of 0.5mm (0.02'). It provides a horizontal range of 20mm (0.79') and a vertical range of 10mm (0.38'). Utilize the XY axis scale of 1mm (0.04') and the scale wire for precision readings. 3. Advantage of Portability: Achieve precise placement without glue or complicated steps using our grout monitor with newly designed mounting posts. Its improved stability and userfriendly design make attaching the two plates effortless and convenient. 4. Good Material: Ensure monitoring accuracy with our grout monitor. Its advanced technology delivers clear results. quality ABS and acrylic materials guarantee durability and stability, while the design ensures easy data readability.