Economy Boyle's Law Apparatus Glassware_Glass Burettes Single-pole double-throw brass knife switch

Single-pole double-throw brass knife switch on a durable plastic base

5-inch height for free-spinning compass and magnetometer demonstrations

this 4mm-stackable safety lead carries up to 12A through nickel-plated split-hollow pins on both ends

stamped (Zn) to identify it against the rest of the metal-cube series

bridging the reach gap between the standard 500mm and the long-haul 1000mm plug-to-plug patch wires

Economy Boyle's Law Apparatus Glassware_Glass Burettes Single-pole double-throw brass knife switchEconomy Boyle's Law apparatus on a wooden stand with a heavy metal base, 100cm millimeter graduated scale, and an adjustable mercury reservoir for varying pressure on a trapped gas column.