If you're insterested in other scientific instruments built (mostly) from Legos, take a look at the watt/Kibble balance designed by former colleague of mine and

If you're insterested in other scientific instruments built (mostly) from Legos, take a look at the watt/Kibble balance designed by former colleague of mine and his team at NIST: https://aapt.scitation.org/doi/abs/10.1119/1.4929898 https://aapt.scitation.org/doi/abs/10.1119/1.4929898 and https://www.nist.gov/si-redefinition/kilogram/nist-do-it-yourself-kibble-balance https://www.nist.gov/si-redefinition/kilogram/nist-do-it-you...