...place of the centre of gravity may be varied at pleasure. The fulcrum, as before remarked, rests upon an agate plane throughout its whole length, and the...horizontal piece, carrying at each extremity two sets of Y s, one a little above the other. The upper Y s are destined to receive the agate planes to which...

...before remarked, rests upon an agate plane throughout its whole length, and the scale-pans are attack* to planes of agate which rest upon the knife-edges...horizontal piece, carrying at each extremity two sets of Y s, one a little above the other. The upper I > are destined to receive the agate planes to which...

...place of the centre of gravity may be varied at pleasure. The fulcrum, as before remarked, rests upon an agate plane throughout its whole length, and the...horizontal piece, carrying at each extremity two sets of Y «, one a little above the other. The upper Ys are destined to receive the agate planes to which...

...knife-edges, forming the points of support. This method of supporting the scale-pans is believed to be due to Mr. Cavendish. Upon the lower half of the pillar,...horizontal piece, carrying at each extremity two sets of Y's, one a little above the other. The upper T's are destined to receive agate planes, to which the...

...knife-edges, forming the points of support. This method of supporting the scale-pans is believed to be due to Mr. Cavendish. Upon the lower half of the pillar,...horizontal piece, carrying at each extremity two sets of Ts, one a little above the other. The upper Ts are destined to receive agate planes, to which the scale-pans...