Reading Magnifier, 100mm, 15cm Focal Length Electricity & Magnetism_Electricity & Circuits carrying a red-and-blue spirit column

carrying a red-and-blue spirit column and screen-printed dual scale from -10 to 50°C and 20 to 120°F for long-term readability

75-inch plano-convex lenses in an aluminum frame

paired against zinc

High-tension power supply driving spectrum and discharge tubes in atomic spectra and gas discharge demonstrations for advanced physics classrooms

Reading Magnifier, 100mm, 15cm Focal Length Electricity & Magnetism_Electricity & Circuits carrying a red-and-blue spirit columnWide field 100mm reading magnifier with a 15cm focal length, the large aperture giving a panoramic view of pages, prints, or specimens during reading and inspection.