Concave Glass Mirror, 50mm Diameter, 300mm Focal Length Rod Material_Stainless Steel Snap-apart 2-inch ceramic bar magnets

Snap-apart 2-inch ceramic bar magnets in a 10-pack

Generates a steady steam bath around a sliding thermometer through a 180 by 115mm copper vessel with filling tube

eight planet-tipped rods

Perforated 2mm-hole grid at 1cm intervals on an irregular-shaped body mounted at its center of gravity

Compares liquid-expansion rates by suspending five removable glass bulbs-and-tubes in a shared heated water trough

Concave Glass Mirror, 50mm Diameter, 300mm Focal Length Rod Material_Stainless Steel Snap-apart 2-inch ceramic bar magnetsLong focal 50mm concave glass mirror at 300mm focal length and ~1. 8mm thickness, the gentle curvature supporting near collimated reflection and astronomical ray tracing analogues.