6-Piece Acrylic Lens Set, 50mm (Convex, Concave, Plano, Meniscus) Subcategory_Lab Burners the medium-strength option for classroom

the medium-strength option for classroom investigations into magnetic poles and field-line geometry

Ten-pack of 5mm yellow LEDs with diffused round lenses

Copper plate with 4mm socket terminals for the simple-cell apparatus

Hangs a 20mm solid aluminum cube via an integrated hook for water-displacement density work

Rooster dissection model demonstrates avian anatomy

6-Piece Acrylic Lens Set, 50mm (Convex, Concave, Plano, Meniscus) Subcategory_Lab Burners the medium-strength option for classroomDesigned for safer per desk optics, a 50mm six piece acrylic lens set covers double convex, double concave, plano convex, converging meniscus, diverging meniscus, and plano concave.