Alnico Bar Magnet Pair, 1.5" Pack Size_6 Double-concave glass lens at 3-inch

Double-concave glass lens at 3-inch diameter and 200mm diverging focal length

Needle valve and flame stabilizer deliver fine flame control on this liquid propane Bunsen burner for precision chemistry and biology heating work

paired with electroscopes and pith balls in classic electrostatic-charging investigations

and link motion reversing mechanism

Spring-loaded for hands-free grip

Alnico Bar Magnet Pair, 1.5" Pack Size_6 Double-concave glass lens at 3-inchCompact 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.