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Portrait of Franz Reuleaux ( 1829 - 1905) German mechanical engineer of the Berlin Royal Technical Academy, father of kinematics,remembered for the Reuleaux triangle Stock Photo - Alamy
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Berlin, Germany - April 18, 2013: Production of metal components in a foundry - mechanical engineering Stock Photo - Alamy
![dpa) - Mechanical engineer Alexander Binder of LMTB (Laser- und Medizin-Technologie GmbH) presents a newly developed laser cutter, Berlin, 11 October 2002. The laser cuts silicon solar cells more precisely and material dpa) - Mechanical engineer Alexander Binder of LMTB (Laser- und Medizin-Technologie GmbH) presents a newly developed laser cutter, Berlin, 11 October 2002. The laser cuts silicon solar cells more precisely and material](https://c8.alamy.com/comp/D3BCG0/dpa-mechanical-engineer-alexander-binder-of-lmtb-laser-und-medizin-D3BCG0.jpg)