300mm Red Connecting Lead Material_Glass this metal bench clamp anchors

this metal bench clamp anchors force-table and simple-machine experiments in physics classrooms

producing audible beats when sounded against its fixed-frequency partner on the matching wooden resonance base

Alnico Grade III bar pair at 75 x 15mm with steel keepers in a cardboard box

used to demonstrate standing waves in air through powder-pile node spacing measurements

constantan

300mm Red Connecting Lead Material_Glass this metal bench clamp anchorsUsed as the red rail partner to the 300mm black 2mm stackable lead, this insulated wire keeps polarity color coded across the mid reach branches of small scale breadboarded circuits.