The Rotary Motion Sensor Replacement Swivel Mount (RMV-SWIVEL) is designed to screw into the threaded hole of Rotary Motion Sensor (RMV-BTD) on the end opposite the sensor cord. The Ultra Pulley Ultra Pulley Attachment (SPA) then attaches to the pivoting threaded post. This can be adjusted for height so the Ultra Pulley is in line with 3 steps of the Rotary Motion Sensor Pulley.
If your Swivel Mount does not have the threaded rod that allows for this attachment (see photo) then please contact Technical Support at support@vernier.com, or call 888-837-6437.
