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

Pack of 10 Stoddard test tube clamps in stainless steel with finger grip securely holds test tubes during heating

Laboratory table clamp mounting rods to benches up to 2

Packaged as a biodegradable classroom kit

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.