# tonal system

> hexadecimal (base 16) system of notation, arithmetic, and metrology proposed by Nystrom in 1859

**Wikidata**: [Q7820724](https://www.wikidata.org/wiki/Q7820724)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tonal_system_(Nystrom))  
**Source**: https://4ort.xyz/entity/tonal-system-q7820724