An educational model display; another; two resistance boxes; five telescope object lenses, the largest - 9¾in.dia, two vacuum pumps and a set of foot bellows (a lot)
An educational model display; another; two resistance boxes; five telescope object lenses, the largest - 9¾in.dia, two vacuum pumps and a set of foot bellows (a lot)
An educational model display; another; two resistance boxes; five telescope object lenses, the largest - 9¾in.dia, two vacuum pumps and a set of foot bellows (a lot)
