6-Metal Equal Mass Cylinders Set (Copper, Lead, Brass, Zinc, Iron, Aluminum) Manufacturer_Austerlitz each 20mm on edge with

each 20mm on edge with a top hook for suspending in water during Archimedes-principle and buoyancy experiments

each one rotating to follow the local field whenever a magnet is placed beneath the plate or alongside it

gripping cylindrical items from 15 to 60 mm alongside an integrated boss head for retort rods

Built for wing-spreading during insect mounting

6-Metal Equal Mass Cylinders Set (Copper, Lead, Brass, Zinc, Iron, Aluminum) Manufacturer_Austerlitz each 20mm on edge withSix equal mass 100g cylinders in copper, lead, brass, zinc, iron, and aluminum at a shared 0. 6 inch diameter, varying length isolating density as the single variable across materials.