Designed by Charles Perry, 1989.
(three plastic pieces and 3 brass rods, 2 inches)

Separate the three plastic pieces from the three brass rods. Charles Perry is a well known architect and sculptor who has also designed some puzzles. The Charles O. Perry Puzzle Page shows a number of puzzles, including the Double Puzzle Page with a diagram of how it goes together:



Further Reading
Charles O. Perry Puzzle Page, from: http://www.charlesperry.com/puzzles
Double Puzzle Page, from: http://www.charlesperry.com/puzzles/double-puzzle