What specification must a scale meet for weigh-ins?

For weigh-ins in powerlifting competitions, the specification that a scale must meet includes being an electronic scale capable of displaying weight measurements to two decimal points. This ensures precision in weight measurement, which is crucial for classifications and divisions within competitions.

Using an electronic scale that shows weights to two decimal places allows for more accurate readings, especially when dealing with competitors who may be very close in weight. This precision helps ensure fairness in weight classifications, as athletes are often categorized into specific weight classes. Accurate weight measurements are vital for the integrity of the competition, as they affect the athlete's placement and ability to compete against others in the same weight bracket.

Other options, while they may have their own contexts or applications, do not provide the necessary precision required for powerlifting weigh-ins, making them less suitable than the electronic scale specification.