Daniell, Alfred, 1853-1937 · London : Macmillan · leaf 60
one another, and the standard unit removed : the bar to be measuredis placed instead of it, and the jaws are again brought together so as to graspit in the same way. The jaws are brought together by fine screw adjustments,such as those previously described, so that the difference of the millionth… … of metal, which is included along with them between the jaws, with its edgesin a vertical plane. If the grasp be too loose, this piece of metal can bemoved freely, and will fall back when lifted and let go ; if the grasp be tootight, this metal plane cannot be moved ; if it be exact, the metal…
Physics
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