Alnico U-Shape Magnet, 115 x 20 x 8mm Light & Optics_Reflection & Refraction and 500mm focal lengths for

and 500mm focal lengths for comparative refraction experiments

with both 4mm stackable sockets and screw terminals so leads wire in without an adapter to either bench standard

Zinc alloy natural gas Bunsen burner with flame stabilizer ships with a 2-foot neoprene gas hose for quick bench hookup in chemistry classrooms

and sterilization without corroding under common laboratory reagents

and chemistry heating applications

Alnico U-Shape Magnet, 115 x 20 x 8mm Light & Optics_Reflection & Refraction and 500mm focal lengths forWide shoulder 115 x 20 x 8mm Alnico U shape with poles labeled and a keeper supplied, the broad pole faces giving a flatter field profile than narrow U shape models.