Demonstration Meter Included_Rod Engineered to expose both AC

Engineered to expose both AC and DC generation on a single hand-cranked apparatus

and ray-tracing demos

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

Larger 125-millimeter slotted screwdriver with a 4mm tip and durable plastic handle

gripping cylindrical items from 15 to 60 mm alongside an integrated boss head for retort rods

Demonstration Meter Included_Rod Engineered to expose both ACPermanent magnet moving coil meter mounted in a transparent wooden box with all internal electrical connections visible, sized so students can see the moving coil mechanism while it reads.