An electronic scale has the following printed on its front display panel: 500 g × 2 g. What does each number refer to? What is the smallest amount that should be weighed on a scale that has 500 g × 2...

An electronic scale has the following printed on its front display panel: 500 g × 2 g. What does each number refer to?

What is the smallest amount that should be weighed on a scale that has 500 g × 2 g on its display panel? (Use the value for the scale’s readability in calculating the smallest quantity to be weighed.)