The Zeiss Zigma is a high performance variable pressure scanning electron microscope, featuring the GEMINI column with electromagnetic/ electrostatic objective lens system (80º conical final-lens) and water cooling for best thermal stability and reproducibility, designed for analytical applications. Resolution of 1.3 nm at 20 kV, acceleration voltage of 0.1-30 kV, magnification of 12-1Mx. Motorized 5 axis stage.