Bonvoisin 2KG/4400lb Calibration Weight for Digital Scale, Class M1, Carbon Steel, Chrome Finish (2000g)

Bonvoisin 2KG Calibration Weight for Digital Scale, Class M1, Carbon Steel, Chrome Finish (2000g)

Bonvoisin Lab Scale 5000gx0.01g High Precision Electronic Analytical Balance 0.01g Accuracy Laboratory Precision Digital Scientific Scale (5000g)