Steel Ball Bearings, 16mm, 10-Pack Entomology & Zoology_Zoology Models Four-cell D-size holder in unbreakable

Four-cell D-size holder in unbreakable plastic with curved retention sides

a one-meter constantan resistance wire graduated in millimeters

this stainless steel one-meter ruler carries stamped centimeter and millimeter graduations along its length

this insulated wire pairs a 4mm banana plug with a crocodile clip at the other end for color-coded patch wiring

Steel Ball Bearings, 16mm, 10-Pack Entomology & Zoology_Zoology Models Four-cell D-size holder in unbreakableTen pack of 16mm steel ball bearings sized as a larger projectile for ramp experiments, collision studies, and mechanical systems setups with increased momentum per unit requirements.