Two-Sided Boss Head Clamp, Painted Die-Cast, up to 19mm Rods Pack Size_Single Reproduces Ewald von Kleist's 1745

Reproduces Ewald von Kleist's 1745 charge-storage device with concentric metal cups around a plastic dielectric

Two pith balls suspended on unspun silk from a brass pillar

glass working

Diamond lattice kit with 39 carbon atoms and 60 connectors for building the tetrahedral covalent network that gives diamond its exceptional hardness and optical properties

this model removes a brain half to expose the cortical surface

Two-Sided Boss Head Clamp, Painted Die-Cast, up to 19mm Rods Pack Size_Single Reproduces Ewald von Kleist's 1745Heavy duty die cast alloy boss head with a painted gray finish and two adjustable thumbscrews, accepting rods up to 19 mm in diameter for larger retort stand assemblies.