Handheld Vacuum Pump with Gauge Category_Chemicals introducing combinational-logic behavior by using

introducing combinational-logic behavior by using physical relays so students can hear and see the gate state in real time

An 18mm pole gap on this 37 x 13 x 10mm Alnico U-shape concentrates field strongly enough to bend filings into clear field lines

Four 50 gram brass slotted masses paired with a 50 gram hanger

for visualizing gas pressure differences in fluid-mechanics work

Demonstrates how current through a coil produces a controllable magnetic field

Handheld Vacuum Pump with Gauge Category_Chemicals introducing combinational-logic behavior by usingFitted with a built in mercury gauge and flexible hose, this handheld vacuum pump pulls partial vacuum for gas law demonstrations, vacuum filtration, and leak testing.