The Leofoto NR-140D is a special mount designed to attach measuring devices such as the Garmin XERO C1 or C2 chronograph or similar instruments to the side of the fore-end. This mount is compatible with Arca-Swiss and Picatinny mounts and provides a secure and stable connection. Ideal for precision shooters and measurements, the NR-140D allows for flexible and reliable mounting of your equipment.