MastrolabacusA bigger version of Astrolabacus with five grooves. Maybe the first puzzle with moving marbles that jumbles.
Monroe's MarblesMove the marbles from one column to the next by tilting and turning. Try to get each column a single colour.
One At A TimeTwo intersecting rings with three non-intersecting circles connected by gears.
OrganolabacusAn extremely big variant of Astrolabacus with eighteen segments but with six channels of beads.
Over-and-UnderThree rings with seventeen marbles each, unconnected but exchangeable.
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