Optically Worked Double Convex Glass Lens, 75mm Diameter, 300mm Focal Length, Alternate Model Color coded periodic table Periodic table Chemical elements Periodic table poster reading static pH in water

Optically Worked Double Convex Glass Lens, 75mm Diameter, 300mm Focal Length, Alternate Model Color coded periodic table Periodic table Chemical elements Periodic table poster reading static pH in waterAlternate model 75mm double convex glass lens at 300mm focal length, the optically worked surfaces and ground polished edges parallel to the main line 300mm focal lens for backup stock use.

SKU: 67089878355 · From lagence-mr.com