m�gearbox, pneumatic tube, catheter, syringe, microscope slide, electronic circuit board, hydraulic system valve, ductwork, ventilator, anatomical model of the human head, skullcap, microchip, circuit breakers, thermostat, pressure gauge, medical scanner, x-ray viewer, stethoscope, anatomical diagram of the brain, neuron connections, synapse, cerebral cortex, optical fiber cable, microsensor, pipework, vessel, turbine, compressor, valve assembly