Swissmad12 tiles in red and white make up a scross in a red body. No sursprise that this puzzles comes from Switzerland.
The ReciprocatorTwo sets of parallel plungers are also connected by an inner pinion. Pressing one plunger causes the adjacent plunger to move in the opposite direction.
TranspaThree layers of transparent pieces that can be pushed on top or below each other. The goal is to create a specific pattern.
Tri-TrickNine pieces with the digits 1-9 on them are moved with two intersecting plungers.
TriangleroundA custom built puzzle created in plastic with coloured paper glued on. The tiles are shaped to make the puzzle equivalent to the Rotascope.
TricleThree intersecting circles with visible orientation.
TrillionMove the same-colour pieces from the lines to the circles.
TrioSimilar to the Puzzler from Douglas Engel but with 3 circles.