Oscilloscope, Model EI-803, 30 MHz Base Size_8 x 5" 5 inches) with one fork

5 inches) with one fork carrying an adjustable tuning mass

5-inch female pelvis model demonstrates 9-month pregnancy anatomy and fetal positioning before delivery for obstetrics teaching

providing a measurable projection surface for sizing real images formed by lenses and concave mirrors

Sliding-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

Oscilloscope, Model EI-803, 30 MHz Base Size_8 x 5" 5 inches) with one forkHigher bandwidth 30 MHz dual channel oscilloscope, the next step instrument up from the 15 MHz EI 800 for AC signal, waveform, and frequency response work in advanced classrooms.