Precise monitoring with a two-panel design - The monitor features two panels, with a transparent top plate that lets the cursor 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 to demonstrate the design. High-precision measurements - Resolution: 0.5 mm (0.02 inches). - Horizontal range: 20 mm (0.79 inches). - Vertical range: 10 mm (0.38 inches). - XY axis scale: 1 mm (0.04 inches) and a scale wire for high-precision readings. Easy to install and portable - Mounting posts are designed to attach two plates without glue or complicated steps. - Improved stability and a user-friendly design make setup effortless and convenient. Durable materials and clear data - Made from high-quality ABS and acrylic to ensure durability and stability. - The design enables easy reading of data and reliable performance. Use scenarios - Tile and grout projects: monitor and log grout joint gaps during installation or inspection to ensure consistency across surfaces. - Panel alignment and placement checks: verify accurate placement of two plates in tight or hard-to-reach areas without mess or complexity. - Quality control in fabrication: quickly document gap changes and retain a written log with the included gap log sheet for records. Summary of key attributes - Function: precise monitoring of gap changes with a transparent top plate, cursor movement, and gap log documentation. - Size and range: horizontal 20 mm, vertical 10 mm, and XY scale with 1 mm increments; resolution 0.5 mm. - Material: ABS and acrylic for durability and stable readings. - Performance: reliable, easy-to-read data with simple mounting and stable operation.