4.5" diameter steel pier, weight is about 40lbs, with a height of approximately 36 inches, adjustable a few inches either way with the leg screws. The top plate is 6 1/2" dia, with a triad of 5/16" threaded holes, 4.5" apart. Overall condition is good, with a nice shiny paint, with minor damage to the finish only where the 3 legs bolt on with three large knobs.
Picture shows a massive Mountain Instruments MI-250 aboard.
$125, pickup only, interesting trades considered. Paypal enabled. Please excuse possible slow email responses next several days.