How I built a Mechanical Calculator
2:35:05
ASMR 2.5 hrs Vintage Mechanical Calculator | Soft Spoken Math
46:30
3D Printed Curta Calculator Assembly
12:36
#145 Fusione in sabbia (alluminio)
17:32
Expanding racks
34:54
I Saved an Electron Microscope from the Trash
58:31
Burroughs Portable Adding Machine, a Detailed Look
23:13
Restauração do Aritmômetro Felix M - Um labirinto vintage com mais de 400 peças
1:16:39