Chris Staecker

Channel focused on historical and mechanical/manual computing devices, with recurring videos that demonstrate, review, restore, and explain how to use antique calculators and arithmetic tools. Typical subjects include mechanical calculators (e.g., Pascaline), slide rules and novel slide-rule designs (including 3D-printable versions), hand‑calculation systems like Chisanbop, trade stimulators, pedometers, and homemade or experimental computing devices (e.g., marble computers).