Product Quantity: 100 Color: Yellow Specifications: 20x20 mm, 30x30 mm, 40x40 mm, 50x50 mm, 60x60 mm Material: Acrylic Enables quick positioning with speedometers and common measuring instruments. Suitable for long-term monitoring of bridges and buildings. Used to measure and monitor facades, including around corners. Supports height and axis transfer around corners and from interior to exterior. Can be installed on challenging surfaces. Crosshairs are printed on the backplate beneath the precise center of the reflective target to ensure permanent marking of the measurement point. If the reflective target is damaged, it can be easily replaced to quickly, easily, and inexpensively restore the measurement point. Applications: Tunnel engineering, subway engineering, bridge engineering, building construction, slope monitoring, ship inspection. Package Includes: 100 Reflectors Note: Due to differences in lighting and screen settings, the item’s color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement.