Ray Box with Magnetic Base, 12V 21W Category_Plasticware 5mm thermometer hole for specific-heat-capacity

5mm thermometer hole for specific-heat-capacity experiments

and simple-machine force-motion measurements

sized for low-current circuit work below the 1A range where finer resolution matters more than full-scale capacity

Open back reveals spine and posterior musculature while the head section preserves upper-body context

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

Ray Box with Magnetic Base, 12V 21W Category_Plasticware 5mm thermometer hole for specific-heat-capacityMagnetic 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.