US$ 27.99
supplied with copper
and resonance relationships
Life-size human skeleton model features flexible spine
Standard rheostat at 280 ohms and 1
Elasticity kit with foam blocks
Gowland Folding Magnifier with Plano-Convex Lens, 0.75", 10x Material_Copper supplied with copperGowland type 10x folding magnifier with two 0. 75 inch plano convex lenses in an aluminum frame, extra white glass delivering clear detail with minimal chromatic distortion.
US$ 27.99
US$ 30.07
US$ 34.99
US$ 27.99
US$ 39.99