The tool opens to show a set of kitchen scales. Weights, or everyday items, can be dragged onto the scales from the dock on the left. Unwanted items can be dragged into the bin, or all items cleared from the scales by clicking ‘Clear all’.

By default, the kitchen scales show 10 kg in 0.25 kg. This scale can be changed by clicking on the button under the kitchen scales, and selecting another value from the menu.

Use the buttons at the top right of the screen to choose between the kitchen scales, a 2-pan ‘Libra’ balance, or a digital weighing machine.

Clicking ‘Reset’ returns the tool to its default state, an empty set of kitchen scales showing 10 kg in 0.25 kg.