14-Piece Stainless Steel Slotted Mass Set Subcategory_Scales and Balances two movable bridges

two movable bridges

Hand-driven Newton's color disc that spins seven painted segments fast enough to merge into apparent white through persistence-of-vision and additive color mixing

Universal 2-input NOR gate module with red/green LED outputs and a printed truth table

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and torsional balance

14-Piece Stainless Steel Slotted Mass Set Subcategory_Scales and Balances two movable bridgesRacked display of fourteen precision machined stainless steel slotted masses totaling 1110 grams from 1 to 100 gram pieces, organized for classroom physics investigations in mechanics.