Arrival In simple terms, calibration is the processing of checking the reading of a scale using a reference weight for comparison. In the process, the scale’s reading error is defined as the difference between what the scale is displaying and the true value of the weight on top of it. This is why it is vitally important to use certified calibration weights. During a scale’s smart or quick calibration, it will relearn the true weight of the calibration weight placed on top of it and use it as a reference point. Some of the most precise scientific balances or scales are calibrated before each and every measurement. The more precise the calibration weight, the more precise future readings will be. The goal is to minimize any measurement errors. The Acaia 500g Calibration Weight follows the same aesthetic as Acaia scales, with the Acaia logo and laser-etched on the top and side. Acaia calibration weights are built to F2 class equivalent standards (± 0.0075 g). The stainless steel material is durable to ensure accuracy over time, and the weight comes with an EVA foam case for protection during travel. Machined from stainless steel for long-term durability Includes custom-fit soft travel case for protection Why is calibration important? Acaia scales are precision instruments. The weighing sensor responds not only to weight, but also to temperature effects, surface tilt, gravitational influence, voltage bias, etc. In order to rule out external factors and maintain the highest weighing accuracy of the scale, periodic calibration is advised. The benefits of a calibrated scale are cost efficiency, reliability, and of course great tasting coffee that is duplicatable! Acaia recommends a daily calibration for commercial use (cafes). If you're a home user, every month will work. And if you take the scale on your travel adventures, you should calibrate at the new location.