6-Piece Optical Elements Set for Hartley's Disc Subcategory_Alternative Energy Mid-length 750mm black insulated lead

Mid-length 750mm black insulated lead with 4mm banana plugs at both ends

are simulated on the LCD monitor and provide realistic diagnostic measurement facilities

Fine-gauge 24 SWG bare copper wire on a 250g reel approximating 375 feet

Lead plate with 4mm socket terminals for the simple-cell apparatus

Fine 40-60 mesh iron filings in a 100-gram sprinkle bottle

6-Piece Optical Elements Set for Hartley's Disc Subcategory_Alternative Energy Mid-length 750mm black insulated leadAcrylic optical elements 50mm wide semicircular, biconvex, biconcave, right angle prism, and trapezoidal blocks packaged together as a spare set for the rotatable optical disc.