Transport (rail, water, aviation)

Outboard Marine Reverser

This product is a cut-away of an outboard marine reverser. It is a mechanical, universal type, rever...

Hydrojet, Manual Operation

This product is a cut-away of a "Castoldi" jet drive marine propeller. It is operated manually by ha...

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Solar Hydrogen Trainer Heliocentris

Nexa Heliocentris Hybrid energy lab-system

Bio-energy Science Kit (FCJJ-22)