Reading Magnifier, 50mm, 20cm Focal Length, Alternate Model Light & Optics_Spectroscopy providing a more rigid mounting

providing a more rigid mounting platform than a meter-rule for lens and mirror investigations

supplying the third-color short-reach line in high-current 4mm-socket bench-circuit wiring

Two 25mm lenses folding out together for 7x combined magnification in a pocket housing

Long-focal double-concave glass lens at 75mm diameter and 300mm focal length

Reading Magnifier, 50mm, 20cm Focal Length, Alternate Model Light & Optics_Spectroscopy providing a more rigid mountingChrome plated alternate build 50mm reading magnifier with a 20cm focal length, the wider focal distance favoring page wide field of view over higher magnification.