Aluminum Plotting Compass, 2" Diameter Base_Octagonal Lamp-house assembly dimensioned as the

Lamp-house assembly dimensioned as the matched replacement unit for optical bench and light-source apparatus when the original housing reaches end of life

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

outfitting classroom stations for sample transfer and dispensing

this Melde's vibrating string apparatus pairs an oscillator-driven string with a mass tray that adjusts tension to determine wavelength

25 inches with vinyl-coated prongs on a 5

Aluminum Plotting Compass, 2" Diameter Base_Octagonal Lamp-house assembly dimensioned as theGlass faced plotting compass in an aluminum case with a dial marked in principal points, used to map field lines around bar magnets and solenoids.