Keyboard shortcuts make measuring faster. On [penggaris online](https://penggarisonline.id/), you can switch units, toggle guide lines, turn on the crosshair or enter fullscreen with a single key, which is handy on a desktop or laptop.

Hobbyists who work with bolts, screws and drill bits sometimes want a rough size check when the toolbox is out of reach. penggaris online can give a reasonable estimate, though anything that demands high precision should be confirmed with a proper measuring instrument.