Penman, Laurie, Common clock escapements : a description of common escapements and practical workshop methods for mechanical clocks ancient and modern / Clock escapements Laurie Penman. - 190 pages : illustrations ; 23 cm ISBN: 9781481837156 148183715X Subjects--Topical Terms: Clocks and watches--Escapements. Subjects--Index Terms: escapement verge anchor/lever detached/free clock technical practical The Author Penman, Laurie Clock (general)