Ray Box with Magnetic Base, 12V 21W Category_Plasticware and simple-machine force-motion measurements

and simple-machine force-motion measurements

5mm thermometer hole for specific-heat-capacity experiments

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

Cut-away 17-inch active volcano model reveals magma chamber

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

Ray Box with Magnetic Base, 12V 21W Category_Plasticware and simple-machine force-motion measurementsMagnetic 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.