Clocks: an escapement mechanism. Engraving by W. Kelsall after J. Clement.
Wellcome Collection

Clocks: an escapement mechanism. Engraving by W. Kelsall after J. Clement.

Joseph Clement

CC0 — Public Domain
Wellcome Collection

Lettering: Mr. R. May's detached escapement. ; Drawn by J. Clement ; Engraved by W. Kelsall

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