50Ω Resistance Unit, Max 7.0V Subject_Anatomy with lengths varying by density

with lengths varying by density to isolate the mass-volume-density relationship for student investigation

Six-piece 3-inch optical lens set combining three double-convex and three double-concave glass lenses at 200mm

and stomach demonstrates internal anatomy and organ relationships for ichthyology teaching

Diffraction grating mounted on a 90 x 40mm card slide

Closing to 3m and extending to 9m

50Ω Resistance Unit, Max 7.0V Subject_Anatomy with lengths varying by densityLabeled terminal 50 ohm resistance unit at 7. 0V max in a plastic enclosure, providing the standard mid range value for current limiting LEDs and dropping resistors in student circuits.