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Use "escapements" in a sentence
"(Though algebraic in mathematical thought, not geometrical, the Chinese were perfectly capable of making elaborate gears, clock escapements, and other devices dependent on rotary motion.)"
"It is really not a difficult matter to draft escapements in different positions, as an example will show."
"It is well in drafting escapements to make them as large as possible, say thirty to forty times larger than in the watch, in the present case the size is immaterial, but we must have specifications for the proportions of the angles."