US$ 1425.00
Lead plate with 4mm socket terminals for the simple-cell apparatus
and horseshoe magnet that swap by hand
are simulated on the LCD monitor and provide realistic diagnostic measurement facilities
Fine 40-60 mesh iron filings in a 100-gram sprinkle bottle
Stacks three independently folding 25mm lenses for 10x magnification
6-Piece Optical Elements Set for Hartley's Disc Subcategory_Alternative Energy Lead plate with 4mm socketAcrylic optical elements 50mm wide semicircular, biconvex, biconcave, right angle prism, and trapezoidal blocks packaged together as a spare set for the rotatable optical disc.
US$ 1425.00
US$ 272.50
US$ 234.50
US$ 160.00
US$ 347.50
US$ 234.50
US$ 43.00
US$ 140.25