Farpoint's Dovetail Plate for the Meade 12" SCT is compatible with "D" sized (Losmandy) saddles and telescope mounts that use this size dovetail bar. The radius blocks and screws required to mount the dovetail bar on the OTA are included. Rounded corners and chamfered edges on the Farpoint Dovetail Plates allow for smooth set up even in the dark. Measurements are 19" long, 0.5" thick Farpoint dovetail plates are compatible with Losmandy style dovetail accessories!