Alnico Horseshoe Magnet, 3 x 1.5" Material_Acrylic Reel of 250-foot 24 SWG

Reel of 250-foot 24 SWG nichrome resistance wire

One hundred numbered slots in a hardwood storage box hold standard microscope slides for ordered reference and classroom slide-library organization

Zinc-plated rectangular steel bar-magnet pair packaged with keepers that bridge the poles in storage

Refracting white light into a visible rainbow spectrum

With additional USB or WIFI unit

Alnico Horseshoe Magnet, 3 x 1.5" Material_Acrylic Reel of 250-foot 24 SWGMid size 3 x 1. 5 inch Alnico horseshoe sits between the 1. 5 inch compact and the 5. 75 inch full class units, anchoring magnet strength comparison work across the horseshoe series.