A triple kaleidoscope made of brass, glass, and wood. I got this idea in 1995 but didn't act on the idea for more than ten years. And then we had a house guest stay in the glass room for a year, which further delayed this project. During those delays I was able to improve the design significantly over the 1995 idea.
The Tri Scope features three tubes with three different sets of optics. This gives the viewer a different display in each view port.
The base is a commercial lamp stand. Also pictured are the brass and glass mirror parts that will be used. 
Three sets of kaleidoscope mirrors.
The eye pieces are brass end caps and garden hose parts.
Cutting the brass tubing.
The three brass tubes next to the wooden base. The lamp base has been replaced by a repurposed brass end cap and brass arm rail mount.
The arm rail mount attaches to the brass tube and can pivot in the lamp base.
Pulleys are used to move the color wheels.
The assembled kaleidoscope chassis.
The arm rail mount fits the lower tube perfectly.
The chassis resting on the pivot mount.
Plenty of room for optics.
In this picture the eye pieces are just sitting in their mounts. They will be mounted properly in the final version.