Kaleidoscope, Executive Set Hand Held Wooden Kaleidoscope in Pomelle Wood By Kaleidoscope Artist, Mark Reynolds - 3 Cell Set. Dimensions are Kaleidoscope itself is approx 13 3/4 inches long with cell attached. The barrel diameter is 2 3/4 inches in diameter. The base is 10 1/2 inches long by 5 inches wide. This set does come with 3 Interchangeable oil filled cells. This includes one Dichroic Cell A blue background cell and a Black background cell. The ability to interchange so many cells makes the colors and possibilities almost endless.