This is my first 3D drawing in Creo Parametric. The drawing is similar to Losmandy style telescope dovetail. The Losmandy style dovetail is generally 3 inches wide and has varying thickness and length. I choose the length based on what is needed for my telescope and thicknes based on a Losmandy style dovetail that I currently own. The dovetail holds telescope tube rings. These tube rings hold the scope. In turn the dovetail is fixed into a dovetail saddle on a telescope mount. Thanks for looking!