Photo 1 of Mechanical Balance Scale Double Pan Balance Scale Balance Tray Table Scale for Laboratory School Physics Teaching Supplies Various Weights(100g)

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Photo 1 of Mechanical Balance Scale Double Pan Balance Scale Balance Tray Table Scale for Laboratory School Physics Teaching Supplies Various Weights(100g)Photo 2 of Mechanical Balance Scale Double Pan Balance Scale Balance Tray Table Scale for Laboratory School Physics Teaching Supplies Various Weights(100g)