Equilateral Optical Glass Prism, 26mm Length, 26mm Faces Racks & Stands_Pipette & Burette Stands Optically worked double-concave glass lens

Optically worked double-concave glass lens at 75mm diameter and 150mm focal length

Solid glass friction rod that develops a positive electrostatic charge when rubbed with silk or wool

and pith for stem anatomy and plant tissue teaching

autoclavable and thermal-shock resistant for water-immersion experiments

supplied with a rubber seal for bell-jar vacuum demonstrations

Equilateral Optical Glass Prism, 26mm Length, 26mm Faces Racks & Stands_Pipette & Burette Stands Optically worked double-concave glass lensOptical quality equilateral glass prism at 26 by 26mm, the triangular cross section blank giving classroom grade dispersion for refraction and spectral line experiments.