The Leofoto NR-140 Multi-Purpose Nodal Slide is a precision-engineered 140mm accessory rail designed to help photographers eliminate parallax errors during panoramic stitching. By allowing you to position your camera and lens exactly at the no-parallax point, it ensures perfectly seamless stitched images. CNC-machined from durable, black-anodized aircraft aluminum, this nodal slide provides exceptional strength while weighing only 4.59 ounces. It features an Arca-Swiss compatible design with dovetail grooves on both the top and bottom for versatile mounting. A precision laser-engraved millimeter scale on both sides allows for highly accurate, repeatable positioning. Complete with an integrated screw-knob clamp, the NR-140 easily mounts to standard Arca-Swiss tripod heads to provide a secure and reliable setup.