The Curta Calculator: A Mechanical Marvel Explained | Part 1
21:51
The Curta Calculator: Subtraction, Multiplication, and More | Part 2
4:49
1950 Curta Calculator
12:06
This Amazing 70 Year Old Calculating Machine
38:01
Watchmaking: Machining the Heart of a Watch
8:03
Mechanical calculator in action
16:33
3x+1 = 90 YILDIR ÇÖZÜLEMEYEN BASİT İŞLEM
19:57
Adam Savage's Curta Calculator Gets CT Scanned!
15:43