Reading Magnifying Glass, 50mm, 15cm Focal Length Gifts_Bar Coulomb's law

Coulomb's law

Extended two-inch fingers on this vinyl-coated three-finger clamp provide deeper reach into apparatus assemblies

the 90-45-45-degree faces redirecting wider beams for total internal reflection and image-inversion work

this hair-element hygrometer uses fiber expansion and contraction on an 85 mm dial

sized for fine soldering work on circuit boards and small electronic components

Reading Magnifying Glass, 50mm, 15cm Focal Length Gifts_Bar Coulomb's lawPlastic handled 50mm reading magnifier with a 15cm focal length, doubling as a lab demo lens for focusing sunlight and investigating image formation with convex optics.