The Double Tumbler is the second and more difficult iteration of the Tumbler puzzle. The Double Tumbler shares two identical pieces with his little brother but yet has added two distinctly different parts. Similar to the Tumbler, there are added slots and indicating marks included to aid in the puzzle experience.
"A different twist on a classic by Wil Strijbos"
Use indicating marks to find puzzle alignment.
Release tumblers into body of puzzle
Release double tumbler end cap
Twist turn shake solve learn. No external tools required. No force required. All movements are gravity-assisted.
Classification: Mechanical Take-Apart