American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 201
ke those in hisearlier balance. D D are mean time screws, car-ried by projections from the plane of the bal-ance. The weights for adjustment to tempera-ture, E, are nuts running upon the outer end ofslender rods running through guide projectionsfrom the plane of the balance, and attached tothe… … A balance by Mr. Hardy was the result ofthe desire to make the compensating load ap-proach or recede from the centre in a direct line,and depended for its action upon the directlinear expansion of two metals. A steel dia-metric arm had erected upon each end a verticalbranch, with screw cut to carry…
Clocks and watches
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