Decade Capacitance Box, Model F Graduations_Ungraduated this seven-piece set traces fetal

this seven-piece set traces fetal delivery from engagement through crowning to placental separation for labor and delivery teaching

supplying replacement bulbs for four-cell battery packs and the standard 6V ray-box and panel-lamp apparatus

providing dense uniform spheres for ramp-and-collision experiments where a heavier projectile is needed than the plastic marbles can provide

transverse

Compass mounted parallel to a current-carrying coil deflects against Earth's horizontal field

Decade Capacitance Box, Model F Graduations_Ungraduated this seven-piece set traces fetalUsed to substitute calibrated capacitance into AC circuits without rewiring, this decade box selects cascaded values for RC time constant, resonance, and frequency response student work.