Reading Magnifier, 50mm, 12cm Focal Length Item Type_Density Cubes & Cylinders transparent walls revealing the valve-and-piston

transparent walls revealing the valve-and-piston action of suction pumping

Single-decade resistance box covering 1 ohm to 10 ohms in 1-ohm steps

Beech wood test tube rack accommodates 13 tubes up to 25mm diameter in a 10

5 inches of nylon bristles for scrubbing glassware up to 4 inches in diameter

large-amplitude waves that students can resolve when oscillating the spring by hand for transverse-wave studies

Reading Magnifier, 50mm, 12cm Focal Length Item Type_Density Cubes & Cylinders transparent walls revealing the valve-and-pistonChrome plated metal framed 50mm reading magnifier with a 12cm focal length, sized for fine print reading and convex lens image formation work in introductory optics.