A weighing device for performing a weight measurement on a semiconductor wafer having a specific diameter, the weighing device comprising a weighing pan for supporting the wafer during the weight measurement, wherein: the weighing pan is grounded; and the weighing pan is configured to extend over at least 25% of an area of a surface of the wafer that faces the weighing pan.

A carrier unit for a weight switching device includes a first shift weight carrier (34-1) which moves vertically in relation to a base, for vertically mounting a first shift weight arrangement (22-1R, 22-1L) which has two spaced-apart, parallel carrier arms (30-1R, 30-1L) connected by a bridging piece (32-1). A second shift weight carrier (34-2R, 34-2L) for vertically mounting, with play, a second shift weight arrangement (22-2R, 22-2L) which likewise has two spaced-apart, parallel carrier arms (30-2R, 30-2L) connected by another bridging piece (32-2), is likewise arranged in a vertically movable manner in relation to the base. The carrier arm pair (30-1R, 30-10 of the first shift weight carrier (34-1) is arranged between and parallel to the carrier arm pair (30-2R, 30-2L) of the second shift weight carrier (34-2), and each shift weight carrier (34-1; 34-2) is articulated to a common crosspiece (12) by two parallel links (23-1R, 23-1L; 23-2R, 23-2L).

A carrier unit for a weight switching device includes a first shift weight carrier (34-1) which moves vertically in relation to a base, for vertically mounting a first shift weight arrangement (22-1R, 22-1L) which has two spaced-apart, parallel carrier arms (30-1R, 30-1L) connected by a bridging piece (32-1). A second shift weight carrier (34-2R, 34-2L) for vertically mounting, with play, a second shift weight arrangement (22-2R, 22-2L) which likewise has two spaced-apart, parallel carrier arms (30-2R, 30-2L) connected by another bridging piece (32-2), is likewise arranged in a vertically movable manner in relation to the base. The carrier arm pair (30-1R, 30-10 of the first shift weight carrier (34-1) is arranged between and parallel to the carrier arm pair (30-2R, 30-2L) of the second shift weight carrier (34-2), and each shift weight carrier (34-1; 34-2) is articulated to a common crosspiece (12) by two parallel links (23-1R, 23-1L; 23-2R, 23-2L).

A balance that includes a magazine for test weights (100) to be weighed in succession, a weighing device with a load carrier (200) holding a test weight (100) during an associated weighing operation, and a load changing device transferring the test weight to be weighed from the magazine to the load carrier. The magazine includes a motorized rotatable turntable (300), over the circumference of which the test weights are arranged distributed in test weight receptacles rotatable together with the turntable and with which the test weight receptacle carrying the test weight currently being weighed can be positioned in a weighing standby position above the load carrier. Each test weight receptacle is designed as a carrier gondola (400) mounted to the turntable in a manner vertically movable relative to the turntable and is adjustable in height relative to the turntable via a first motorized height adjustment unit (500, 500).

A balance that includes a magazine for test weights (100) to be weighed in succession, a weighing device with a load carrier (200) holding a test weight (100) during an associated weighing operation, and a load changing device transferring the test weight to be weighed from the magazine to the load carrier. The magazine includes a motorized rotatable turntable (300), over the circumference of which the test weights are arranged distributed in test weight receptacles rotatable together with the turntable and with which the test weight receptacle carrying the test weight currently being weighed can be positioned in a weighing standby position above the load carrier. Each test weight receptacle is designed as a carrier gondola (400) mounted to the turntable in a manner vertically movable relative to the turntable and is adjustable in height relative to the turntable via a first motorized height adjustment unit (500, 500).

The invention relates to a multi-element system for testing measuring systems, by means of which a train of several receiving elements and/or spacer elements lying one behind the other and/or side by side can be formed. The receiving elements have one or more pockets for receiving test weights.

The invention relates to a multi-element system for testing measuring systems, by means of which a train of several receiving elements and/or spacer elements lying one behind the other and/or side by side can be formed. The receiving elements have one or more pockets for receiving test weights.

A dual-truncated wheel Kibble balance includes: a stationary frame; a double balance wheel disposed on the stationary frame; a pair of guide members, such that one of the guide members is disposed on each opposing end of the double balance wheel; outer connector bands, such that each guide member is gravitationally suspended from the double balance wheel by at least one of the outer connector bands; inner connector bands, such that each guide member is gravitationally suspended from the double balance wheel by at least one of the inner connector bands; and a central flexural bridge in mechanical communication with the stationary frame and the double balance wheel, such that the central flexural bridge is: interposed between the stationary frame and double balance wheel, interconnects the stationary frame and the double balance wheel, and flexes in response to pivotal motion of the double balance wheel relative to the stationary frame.