Teylers museum 18th and 19th century electronic test and laboratory equipment

[Kjelt]

So I went to the Teylers museum in Haarlem The Netherlands and they have multiple permanent exhibitions.
One of that is 18th and 19th century electronic test and laboratory equipment that was actually used to conduct experiments in public.
They have the orignal displaycases and the equipment hasn't been moved or touched in 100 years, it is as original as can be.

Here is one of the best and famous pieces, the largest electrostatic generator in the world built in 1784.
More details: https://en.wikipedia.org/wiki/Large_electrostatic_generator_(Teylers)

[Kjelt]

Now one of their pieces I will let you guess what it is, it was build end of the 19th century take a guess..........

[nctnico]

It seems to have a musical keyboard, solenoids and some kind of chimes so I guess an electric chime?

[Tom45]

Helmholtz's apparatus for the synthesis of sound:

http://www.sites.hps.cam.ac.uk/whipple/explore/acoustics/hermanvonhelmholtz/helmholtzssynthesizer/

[Kjelt]

Yes you are correct, wow you are both good.