fayescarlet: aibohphobia: mr-egbutt: thefurrynerd: cutlerish: thelynnfiles: logically-devonian: How the Geneva Drive (the mechanical step that makes the second hand on a clock work by turning constant rotation into intermittent motion) works.
fayescarlet: aibohphobia: mr-egbutt: thefurrynerd: cutlerish: thelynnfiles: logically-devonian: How the Geneva Drive (the mechanical step that makes the second hand on a clock work by turning constant rotation into intermittent motion) works.
