Container e.g. mixing container or drinking glass, with display device for accumulated quantity using magnetically coupled scale element and marking element
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Rotary suction jet for electric vacuum cleaner with rotation of suction tube fitted with cleaning tool by air turbine supplied with drive air via separate air channel for independent regulation of suction and rotation
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Drinking mug with drink quantity display and calculation of overall quantity of liquid drunk over defined time interval
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Display device for an amount drunk comprises a flexible element that is wound around a glass or other container and used in conjunction with a fixed marking on the glass to determine the total or last amount drunk
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Drink container with a device for indicating the quantity of drink
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Drinking vessel with unit for indicating amount of drink which has scale for amount also marking and element rotatable around vessel so that scale and marking are adjustable relative to each other
