Gunther Expansion Apparatus, Brass Waves & Oscillation_Sound & Resonance and friction rods for a

and friction rods for a full unit on charging

Short 150mm red 2mm-stackable lead with nickel-plated pins on both ends

Beech wood test tube rack holds 12 tubes up to 20mm diameter in a 9-inch frame for organized storage during chemistry and biology experiments

the lower-forward-voltage counterpart to the silicon unit for radio-detection demonstrations

Sodium chloride lattice kit with 27 color-coded gray and green atoms plus 54 connectors for building the full cubic NaCl crystal structure in three dimensions

Gunther Expansion Apparatus, Brass Waves & Oscillation_Sound & Resonance and friction rods for aGlass jacketed twin rod Gunther expansion apparatus with 0. 01mm spherometer and electrical contact trigger, supplied with copper, brass, and iron rods for precise expansion measurement.