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Weight calibrator used in the Japanese colonization period

These standard counter weights were used to define the standard unit of mass in the Japanese colonization period. During the inspection, put the standard counter weight on one side of the equal-armed scale, and the counter weight to be inspected will be put on the other side in order to check if it conforms to the standard. There are ten standard counter weights of this set, of which the heaviest one weighs one pound, and the lightest one weighs only 1/160 ounce.

L:5.00 cm X W:2.50 cm X H:3.00 cm

Metrology