Physics Demonstration Microphone Type_Abacus Non-flammable adjustable face shield with

Non-flammable adjustable face shield with crown strap protects the full face from splashes

and titrating with a burette

Copper-walled Leslie's cube at 100mm per side with dull-black

Aluminium-rail Laplace apparatus with a marked mobile bar that moves under 2

Low-form silica crucible holds 100mL in glazed construction without lid for high-temperature combustion and thermal chemistry procedures

Physics Demonstration Microphone Type_Abacus Non-flammable adjustable face shield withPiezoelectric crystal microphone covering 60 10,000Hz with a 1. 4m screened lead, terminals, and jack plug, ready to drop into oscilloscope and signal analysis investigations of sound.