Manufactured by Affordable Eq. Platforms (Art DeBrito), this model supports Dobs from 9" up to 20". It is centered on 37 degrees north but is adjustible for up to 5 degrees either direction. In includes the build-in battery option.
It is brand new. It was bought exactly one year ago and is still in the original packaging. Complete with instructions. For more details email me and I'll supply you with the URL for their website (Astromart prohibits me including it in this ad). Art is not longer making these but does still support them.
Asking $550 which includes shipping to any US destination!