GZM29 reflective stickers 20x20 mm are reflective stickers for surveying and marking tasks. The 20x20 mm size makes the target easy to locate and is suitable for situations where available space is limited. The stickers can be used, for example, in construction and site surveys, for marking temporary survey targets, and in other geodetic tasks. They offer a lightweight alternative to a separate prism structure when the intended use and measurement method allow it. To achieve the best adhesion, the surface should be cleaned and dried before installation. The size should be selected according to the application, measurement distance, and the measurement device used. Before use, it is advisable to check the device manufacturer's instructions regarding the use of reflective targets. The product is easy to keep with your surveying equipment and deploy quickly when a clear reflective marker is needed for a target.