Soldering Iron, Model C Glassware Drilled 3/4-inch steel ball with

Drilled 3/4-inch steel ball with an approximately 2

coronary vessels

providing the simplest open-or-closed action used to introduce circuit-completion concepts in early electricity units

this apparatus aligns suspended particles in a liquid medium between charged electrodes to reveal dipole and parallel-plate field shapes

Rod-mounted full-size skeleton pairs bare bone on one side with painted muscle origins and insertions on the other for skeletal and myology teaching

Soldering Iron, Model C Glassware Drilled 3/4-inch steel ball withHeaviest 125 watt soldering iron in the line with a wooden bakelite handle, sized for sustained workshop work where the smaller 25W and 65W irons can't keep heavy joints flowing solder.