Doug Kniffen wrote: [...] >Having built, over a number of years, nearly every type of camera platform, >it occured that I had thought of this a long time ago. Has anyone heard of >such a design before? [...] Looks like the same principle as Rae Thrasher's dob platform: http://www.loop.com/~raethrasher/eqmount.htm Paul Kline pk6811s@acad.drake.edu