An elastically deformable load bearing structure includes a measuring arrangement for measuring a magnitude of a load acting on the load bearing structure in a loadable section. A mechanical transmission element extends from the loadable section to a measuring section of the load bearing structure and cooperates operatively with a sensor. The sensor is arranged in the measurement section. The mechanical transmission element is constructed as a pivotable rocker supported by a rocker bearing positioned inside a length of the transmission element.

An image forming apparatus includes an apparatus body, an image forming unit, an opening and closing cover, a fixed cover that constitutes a part of an exterior of the apparatus body with the opening and closing cover, and is configured to form a boundary portion with an upper edge of the opening and closing cover in a vertical direction, a positioning portion including a first engagement portion provided in the opening and closing cover, and a second engagement portion provided in the fixed cover, a first conveyance guide provided on the opening and closing cover, and a second conveyance guide provided on the fixed cover. The first engagement portion and the second engagement portion are configured to engage with each other to perform positioning of the opening and closing cover and the fixed cover in the vertical direction and positioning of the first conveyance guide and the second conveyance guide.

A second generation NIST Kibble balance includes: a main body including a main body fulcrum node; a lever bar in mechanical communication with the main body and that pivots about the main body fulcrum node; a central flexural bridge in flexural mechanical communication with the main body and the lever bar; a measurement mass arm mechanically coupled to the main body via the lever bar, the central flexural bridge, and a mass arm flexural bridge; the mass arm flexural bridge in flexural mechanical communication with the measurement mass arm and the lever bar; a reference force arm mechanically coupled to the main body via the lever bar, the central flexural bridge, and a reference arm flexural bridge; and the reference arm flexural bridge in flexural mechanical communication with the reference force arm and the lever bar.