Spectrum Tube Holder Type_Tall Form varying the pole gap from

varying the pole gap from 0

supplied with two 5-inch insulated-handle pointer electrodes

Diamond lattice kit with 39 carbon atoms and 60 connectors for building the tetrahedral covalent network that gives diamond its exceptional hardness and optical properties

supplying a finer-gauge option for precision resistors and standard-cell construction in physics labs

700-microfarad electrolytic capacitor in an ABS module with 4mm sockets

Spectrum Tube Holder Type_Tall Form varying the pole gap fromBosshead equipped spectrum tube holder with 4mm safety sockets on a black panel, mounting any 26cm tube to a laboratory stand for spectroscopy demonstrations from any orientation.