Vintage measuring tape or time machine?

I finally got into my studio to work with my vintage treasures and new glass tablets I made. This one has a spiral of iridescent ambers with a hint of purple encased in crystal clear glass. The 32 inch chain is treated with a flame patina that mirrors the colors in the glass perfectly. I attached an old brass measuring tape that works! Looks kind of like a fishing reel...or a monocle...or a telescope... or a time machine.