US$ 25.99
Wooden-base Morse code key with a black knob
Metal-based linear expansion apparatus with a large dial indicator and three 10-inch rods in aluminum
and coil wire with step-by-step assembly instructions
Brass nine-piece 100 gram slotted mass set with a 100 gram hanger
the pyloric sphincter
Zinc Rods for Thermal Conductivity Experiments, 10-Pack Entomology & Zoology_Dissection Wooden-base Morse code key withRounds out a comparative thermal conductivity set with zinc at a moderate conductivity value, ten 300 by 3mm rods dimensioned to match companion copper, aluminum, and iron packs.