Roberts CR99712 Bedienungsanleitung PDF herunterladen (Seite 236)

Chapter 70

HOROLOGY.

=Watch and Clock Maker’s Handbook=, Dictionary

and Guide. By F. J. BRITTEN. Tenth

edition, 450 illus. 492 pp. crown 8vo. (1902 ) net 5 0

=The Springing and Adjusting of Watches.= By

F. J. BRITTEN. 75 illus. 152 pp. crown 8vo.

(1898 ) net 3 0

=Prize Essay on the Balance Spring= and its Isochronal

Adjustments. By M. IMMISCH. 7 illus.

50 pp. crown 8vo. (1872 ) 2 6

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