Metal small tong looking thing measurements in photo : r/whatisthisthing
Pablo J. Sáez on Twitter: "April 15th: Bday of The one & only *Leonardo Da Vinci*. Still inspiring us master! I got his notebooks @britishlibrary and are just amazing. Father of #SciArt
File:Spitzingsee (Ort) — Alte Wurzhütte (alter Ofen).JPG - Wikimedia Commons