Triple Folding Magnifier with 25mm Lens, 10x Lab Supplies_Classroom the candy-bar form letting students

the candy-bar form letting students break each piece into smaller magnets that retain their own north and south poles

this center-zero galvanometer reads 35-0-35mV at 1mV per division on a fully enclosed EDM-80 housing

Wall-mounted Mason's hygrometer with two identical dual-scale thermometers — one dry and one kept wet via a water reservoir — calculating relative humidity from their paired reading difference

sized for the standard mid-reach run on small-scale breadboarded circuits

Triple Folding Magnifier with 25mm Lens, 10x Lab Supplies_Classroom the candy-bar form letting studentsStacks three independently folding 25mm lenses for 10x magnification, each lens stowing into the housing for pocket portable classroom, field, and specimen work.