Plano-Cylindrical Concave Lens, +17 Diopter, 50 x 50mm Category_Plasticware Flat form case with large

Flat form case with large easily read scale in Metric and Newton range

Funnel has a 19/26 size socket and includes an interchangeable plastic stopper

Copper calorimeter stirrer at 6 inches tall with a 3

Hand-painted 4-part human brain model separates into cortical hemispheres and brain-stem regions for lobed-anatomy teaching at introductory biology levels

Plano-Cylindrical Concave Lens, +17 Diopter, 50 x 50mm Category_Plasticware Flat form case with largePlano cylindrical lens at 50 by 50mm with 17 diopter optical power and ground polished edges, the cylindrical curvature focusing light to a line rather than a point in optics demos.