F1 Class calibration weights from Masse Prazise are manufactured with high metrological accuracy, making them ideal for laboratory and industrial applications. These weights serve as reference standards for calibrating lower-class weights, such as F2 and below, ensuring precise measurements in research, pharmaceutical, and industrial settings. With a range covering 1 mg to 50 kg, F1 class weights are essential for maintaining the accuracy of analytical balances and precision measurement equipment.