Some time ago professor Sparenberg was teaching on the department of mathematics. He made two models that were used during some of his classes.

Number Title Date of Design Dimension (cm) Material
Sparenberg, nr. 1 Nose wheel of an airplane. 1960? ? Electricity
Sparenberg, nr. 2 Weels with an oscillator. 1960? ? Metal and plastic
Sparenberg, nr. 3 Wilberforce Pendulum 1960? ? Metal