US$ 34.50
and 2 quadruple pulleys on a heavy composite base with capstan
9 x 4 x 4 inch base
Double-concave glass lens at 3-inch diameter and 200mm diverging focal length
paired with electroscopes and pith balls in classic electrostatic-charging investigations
Alnico Bar Magnet Pair, 1.5" Pack Size_6 and 2 quadruple pulleys onCompact 1. 5 inch Alnico bar pair, the smallest in the bar magnet series, suited to bench scale magnetism work where space is tight or where weaker field strength is required.
US$ 34.50
US$ 39.00
US$ 99.00
US$ 45.00
US$ 47.95