Watches : the Paul M. Chamberlain collection at the Art Institute of Chicago (1921)
Art Institute of Chicago · Chicago : The Institute · leaf 46
balance is compensated and the escapewheel has less lifting face than on thepreceeding. The escape wheel and leverare in the same plain, and the palletsare set as in Swiss practice. Theregulator is very long, and of the vari-ous designs used in the Howard, thesimplest and best. The balance is… … No. 128—GIRARD PERREGAUX TOURBILEON
Chamberlain, Paul Mellen, 1865-1940 · Clocks and watches
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