Ray Box with Magnetic Base, 12V 21W Category_Plasticware this 4mm-stackable safety lead carries

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

and three low-friction nylon wheels for straight-line momentum experiments

One-ohm 5W wire-wound fixed resistor enclosed in an ABS module with 4mm sockets

Base-mounted 2-stroke diesel engine model in aluminum and plastic

and simple-machine force-motion measurements

Ray Box with Magnetic Base, 12V 21W Category_Plasticware this 4mm-stackable safety lead carriesMagnetic base anchors the metal cased unit to benches and steel boards, while variable focus produces five parallel beams that a shutter masks selectively. Ships with a 12V 21W bulb.