Patent ID: 8044308

Claim:
An electronic balance, comprising: a scale; a main Roberval mechanism for conveying the load of an object to be measured which is mounted on the scale in the vertical direction; a first beam made up of a first pole which is supported by a first fulcrum so as to be able to sway, where the main Roberval mechanism is connected to the near distance point and a connection means for conveying the load of the object to be measured is connected to the far distance point, the near distance point being a distance point close to the first fulcrum on the first pole and the far distance point being a distance point far away from the first fulcrum; a second beam made up of a second pole which is supported by a second fulcrum so as to be able to sway, where the first beam is connected to a near distance point via a connection means and an electromagnetic force generating apparatus for generating an electromagnetic force that is balanced with the load of the object to be measured which is conveyed from the first beam is connected to a far distance point, the near distance point being a distance point close to the second fulcrum on the second pole and the far distance point being a distance point far away from the second fulcrum; incorporated weight for correction; a sub-Roberval mechanism for conveying the load of said incorporated weight in the vertical direction; a linking member for conveying the load of said incorporated weight to the second beam via said sub-Roberval mechanism; and an electromagnetic force generating apparatus for generating an electromagnetic force that is balanced with the load of the object to be measured, characterized in that said linking member is connected to said second beam on the electromagnetic force generating apparatus side relative to the second fulcrum; and said linking member is connected between the second fulcrum and said electromagnetic force generating apparatus.