Polypropylene Test Tube Rack, Standard Diameter_300mm Center-of-gravity kit demonstrating how objects

Center-of-gravity kit demonstrating how objects balance at their center of mass

Horizontal strata model of the Grand Canyon and Grand Staircase region on a 24-inch wooden base

visible crankshaft

SUPERIOR DURABILITY || Features uniform wall thickness ideal for heating and a reinforced rim for protection against high impacts

sized for compact precision-resistor windings and thermocouple junctions in student-built apparatus

Polypropylene Test Tube Rack, Standard Diameter_300mm Center-of-gravity kit demonstrating how objectsPolypropylene test tube rack with two 25 mm outer holes, four 16 mm inner holes, and six drying pins, autoclavable for routine chemistry and biology laboratory use.