Wooden Storage Box for 4" Bar Magnets Category_Science Gifts this Alnico U-shape carries 45mm

this Alnico U-shape carries 45mm pole spacing for compact-bench field demonstrations and motor-effect setups

Ten-microfarad electrolytic capacitor in an ABS module with 4mm sockets

variable valve timing (VVT)

retaining field strength across years of classroom handling

providing the standard mid-range value for current-limiting LEDs and dropping resistors in student circuits

Wooden Storage Box for 4" Bar Magnets Category_Science Gifts this Alnico U-shape carries 45mmSliding top wooden box 5 x 2 x 1 inches with a recess sized for a pair of 100mm (4 inch) bar magnets plus their keeper, preserving the field between teaching sessions.