Fine White Marble Specimen Pack Size:Pack of 12 Stand-mounted lift pump illustrating how

Stand-mounted lift pump illustrating how atmospheric pressure lifts water through a valve-and-piston mechanism

Cast from solid rubber for maximum sustain with minimal strike noise

and short bonds

Adjustable hardwood ramp track with a 30 by 120cm running surface and a run-off section

6-tube capillary pressure demonstration apparatus features metal frame for demonstrating capillary action

Fine White Marble Specimen Pack Size:Pack of 12 Stand-mounted lift pump illustrating howSmall tightly interlocked calcite crystals produce fine marble's sugary texture, suited for sculpture and illustrating recrystallization of limestone protolith.