The dovetail plate provides a platform for coupling telescope to equatorial telescope mounts that have a v-style saddle. The dovetail plate is important for your mounting requirements, and will add stability and safety to your astronomical equipment setup. This dovetail plate attaches to the saddle of a wide range of mainstream V-style mounts and "narrow-style" dovetail plate also works well with various smaller alt-azimuth mounts. SVBONY universal dovetail base for optical astronomical telescope finder scope; universal dovetail base for finder scope, ideal for custom installation of a finder scope on telescopes not already equipped with a compatible base.