My 1957 Friden Mechanical Calculator goes on Japanese TV

My 1957 Friden STW 10 mechanical calculator is due for an appearance in a high quality documentary about women that made mathematical calculations for NASA. But before the filming, I need to make sure it works. Friden Calculator Playlist: https://youtube.com/playlist?list=PL-_93BVApb5_GbzkFwdKpuyPo8Ty83h8b More about the Friden STW10 on my website: https://www.curiousmarc.com/mechanical/friden-stw-10-mechnical-calculator Our sponsor for PCBs: https://www.pcbway.com Support the team on Patreon: https://www.patreon.com/curiousmarc Buy shirts on Teespring: https://teespring.com/stores/curiousmarcs-store Learn more on the companion site: https://www.curiousmarc.com Contact info: https://www.youtube.com/curiousmarc/about