Solid Brass Measuring Weights

These are two cylindrical solid brass calibration weights that are typically used for calibrating scales or balances.

The left weight is a "Keller 1 kg" precision weight and the weight on the right is a "OHAUS 500 g" precision weight.

These are standard weights used in laboratories, educational settings, or industrial applications to ensure accurate measurements. They are precision-machined and often conform to specific calibration standards (like ASTM or OIML).