6-Piece Optical Lens Set, 3", Double Convex and Double Concave Physics_Mechanics and 6V-powered ignition light staging

and 6V-powered ignition light staging each step

this cast double burette clamp secures two burettes side by side for back-titration and comparative analytical procedures

with identical volumes across specimens for direct mass-density comparison

Used to crank a row of 16 cam-driven rods through a moving sine wave

Plastic-bodied wave apparatus with eccentric discs that drive metal rods up and down as the handle turns

6-Piece Optical Lens Set, 3", Double Convex and Double Concave Physics_Mechanics and 6V-powered ignition light stagingSix piece 3 inch optical lens set combining three double convex and three double concave glass lenses at 200mm, 300mm, and 500mm focal lengths for comparative refraction experiments.