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Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.
Colour-coded spring balances, in clear bodies with visible spring mechanisms. Calibrated in both newtons and grams.