Weighing uncertainties
Take the credit of the balance uncertainty calibration

Reminder: 2 shows that the weight displayed is not the weight measured by the scale.

The measured weight is rounded according to the scale resolution.

The weight measured by the scale is not visible to the user. Figure 2 shows that, for any weight measured between 2.545 g and 2.555 g, the weight displayed will always be 2.55 g.

"2.545 g" and "2.555 g" are referred to as "threshold limits" where the displayed weight remains the same. The range of the thresholds is equal to the actual scale interval, d, of the scale.