HOROLOGYWatch and Clock Maker’s Handbook, Dictionary and Guide. ByF. J. Britten. Eleventh edition, 450 illus., 492 pp., crown 8vo. (1915.) 5s.net.Prize Essay on the Balance Springand its Isochronal Adjustments. ByM. Immisch. 7 illus., 50 pp., crown 8vo. (1872.) 2s.6d.
Watch and Clock Maker’s Handbook, Dictionary and Guide. ByF. J. Britten. Eleventh edition, 450 illus., 492 pp., crown 8vo. (1915.) 5s.net.
Prize Essay on the Balance Springand its Isochronal Adjustments. ByM. Immisch. 7 illus., 50 pp., crown 8vo. (1872.) 2s.6d.