I found this stroboscope while visiting secondhand trades, for a few euros. A little of elbow grease to clean it and it's all. The apparatus is very simple: an electric motor with a rheostat to adjust speed. This engine turns at the same time the JAEGER speed counter and the bell placed at the rear. The bell has a slit for the light, which gives the stroboscopic effect. You will notice that this model is the 1826th, which shows that it was manufactured to several thousands of specimens.

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The fastening of the light source has disappeared. There remains the pins, visible on the back of the apparatus, which were used to support this device

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