curiositasmundi: dimmelotu: felixinclusis: kiyo: The Grasshopper escapement is an unusual, low-friction escapement for pendulum clocks invented by British clockmaker John Harrison around 1722.
curiositasmundi: dimmelotu: felixinclusis: kiyo: The Grasshopper escapement is an unusual, low-friction escapement for pendulum clocks invented by British clockmaker John Harrison around 1722.
