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Balances used in Commerce or in the Arts
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action angle apparatus application armature arrangement atmospheric atmospheric railway axis balloon battery boiler centimetres clock coil communication condenser conductor constructed copper cylinder dial diameter direction distance electric electric telegraph electro-magnet employed engine eye-piece fixed force galvanometer give glass goniometer Gramme machine gutta-percha heat heliostat horizontal horse-power hydrometer indicator instrument invented iron kilogrammes latter lens lenses lever light lightning-conductor liquid locomotive machine magnetic magnifying manipulator means mechanism metal metres microscope millimetres mirror motion movable move movement needle needle telegraph negative proof object object-glass obtained ordinary oscillation pantelegraph paper Paris passes pendulum photographic pipes piston placed plate poles position pressure principle produced pump ratchet-wheel rays regulator rotation screw shaft side siderostat silver slide-valve sound-post station steam steam-engine stereoscope strings surface telegraph telescope temperature transmitting tube valve velocity vertical vibrations violin weight wheel wire