Replacement Belt for AC/DC Dynamo, 6" ID Subcategory_Reagent Bottles sized for short-reach high-current branched

sized for short-reach high-current branched circuits where shielded-plug safety is required

Wooden-framed abacus with five steel wires and 20 beads per wire on a 13

Conical filtering flask in borosilicate 3

T-shaped screw-thread connector in borosilicate glass features thread size 13 for connecting multiple components in chemistry apparatus assembly

an individually-stocked spare from the disc series for physics labs

Replacement Belt for AC/DC Dynamo, 6" ID Subcategory_Reagent Bottles sized for short-reach high-current branchedSix inch ID replacement rubber drive belt for the AC DC dynamo, kept on hand so electromagnetic induction demonstrations stay running once the original belt stretches or wears out.