Old clocks and watches & their makers : being an historical and descriptive account of the different styles of clocks and watches of the past, in England and abroad, to which is added a list of nearly twelve thousand makers (1922)
Britten, F. J. (Frederick James), 1843-1913, Britten, Annie · London : E. & F. N. Spon · leaf 358
Fig. 482.—HarrisonsEscapement. of a timekeeper sufficiently accurate to ascertain the longitude atsea, induced him to turn his attention to the subject. He deviseda pecuhar form of recoil escapement,and a pendulum in which the effectsof heat and cold in lengthening andshortening the pendulum were…
Clocks and watches · Clock and watch makers
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