Equilateral Optical Glass Prism, 26mm Length, 26mm Faces Lab Supplies_Rulers & Measuring Supplies Air-cooled rheostat with extended-tube ventilation

Air-cooled rheostat with extended-tube ventilation

or carried between stations

and composites in a labeled 13 x 10 inch plastic sleeve for materials-classification work

a distinctive density reference against the lighter aluminum and heavier steel cylinders

supporting variable audio modulation 1Hz-1kHz plus a 250kHz square wave for speed-of-light measurement work

Equilateral Optical Glass Prism, 26mm Length, 26mm Faces Lab Supplies_Rulers & Measuring Supplies Air-cooled rheostat with extended-tube ventilationOptical quality equilateral glass prism at 26 by 26mm, the triangular cross section blank giving classroom grade dispersion for refraction and spectral line experiments.