Black Replacement Knob for Goggle Sanitizer Cabinet Manufacturer_Austerlitz giving students a wide reference

giving students a wide reference range for density analysis

paired with electroscopes and pith balls in classic electrostatic-charging investigations

Lamp-house assembly dimensioned as the matched replacement unit for optical bench and light-source apparatus when the original housing reaches end of life

Adjustable parallel-plate capacitor with two 120mm metal discs on an aluminum slide

Designed to project narrow beams through interchangeable slit plates

Black Replacement Knob for Goggle Sanitizer Cabinet Manufacturer_Austerlitz giving students a wide referenceMolded black plastic replacement knob sized for the goggle sanitizer cabinet timer switch, restoring rotary control over UV sanitization cycles when the original cracks or breaks off.