Optically Worked Double Convex Glass Lens, 150mm Focal Length, 38mm Diameter Chemistry_Chemicals Four-prong cork-lined retort clamp with

Four-prong cork-lined retort clamp with an integrated boss head

Laboratory table clamp mounting rods to benches up to 2

Meker-style natural gas burner delivers a broad

this bottle of coarse 20-mesh iron filings is a staple for classroom magnetism and field-pattern demonstrations

providing a quick swap-in reference for general-purpose AC-circuit and timing-experiment work

Optically Worked Double Convex Glass Lens, 150mm Focal Length, 38mm Diameter Chemistry_Chemicals Four-prong cork-lined retort clamp withOptically worked glass double convex lens with a 150mm focal length and 1. 5 inch diameter, polished with ground edges for image formation experiments in introductory optics.