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The concept is good, but there’s a central flaw in the design that I’m surprised no instructor picked up on:
“It translates visual information into auditory with a simple mechanism. A lid is placed on the container as a seesaw and it acts as a measuring spoon. When the weight of the liquid or solid it carries exceeds 50 grams, it swings down and empties. When it returns, it bumps against the edge of the container producing an audible feedback sound to the user.”
So as demonstrated with liquid, it works like this:
The issue is that while the description reads “grams,” the vessel has “50mL” printed on it.
Grams, of course, are a unit of weight. Milliliters are a unit of volume. The spring on the lid can be calibrated for weight, but not for volume.
Central flaw aside, I think the goal was good.