Metal Construction Sets

Box Covers Old & New
 		 students building robot





















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The BotBrain Company LLC


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The Original Inventor Box
1920

The First Merkur-Labelled Set 1928

1932

1934

1935

1938

Back of the 1938 Box?

1955

1960

1968

1970

1976
a
1986
a
1986

1989

1989

1986

1989

1989

1989





November Special

Merkur vs Erector
Similarities & Differences

To see the latest that's happing at BotBrain, visit ourNews Blog

BotBrain Blog



Read about the Great Merkur
Elevator Project



Build robots with Merkur. See this listing of Robot Parts