Balances Spring ?ó?é¼?ǣ Dual Scale Metal 250gm / 2.5N Lab Supplies_Classroom Demonstrates how current through a
Balances Spring ?ó?é¼?ǣ Dual Scale Metal 250gm / 2.5N Lab Supplies_Classroom Demonstrates how current through aFlat form case with large easily read scale in Metric and Newton range Flat form case with large easily read scale in Metric and Newton range. Cap. 250gm 2. 5N
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