±2.5mA DC Interchangeable Dial for Demonstration Meter Glass Sets & Apparatus_Organic Chemistry Sets Nine removable sections expose cortical

Nine removable sections expose cortical hemispheres

Tirrill burner on a stable octagonal base adds air

Life-size right lung separates into two parts exposing bronchial tree and alveolar structure

this magnified animal cell model reveals organelle ultrastructure and cellular organization for advanced biology instruction

Universal laboratory clamp holder with dual 360-degree boss head rotation

±2.5mA DC Interchangeable Dial for Demonstration Meter Glass Sets & Apparatus_Organic Chemistry Sets Nine removable sections expose corticalPlus or minus 2. 5mA DC interchangeable scale on a 315x115mm laminated panel with integrated shunt, sized to drop into the demonstration meter and reconfigure it as a center zero ammeter.