Hello, I am selling a Tom Osypowski Single-Axis Standard Equatorial Platform. It was designed for a 10" dob, but could be used for 6" to 10" dobs. Rarely used. I now have larger size scope, so don't need. Good condition. Hand controller, built-in battery, charger, and instructions included. Built for 45 degrees north latitude, it can be used from 40 to 50 degrees north. $850, plus shipping.