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{{Tem list entry|Microscope Name=EM-2|Microscope Picture File=AEI-EM-2.png|Year=1946|Successor=EM-3|Magnification Range=|Magnification Gauge Type=|Specemin Chamber Pressure=|Power Consumption=|System Weught=|Accelerator Type=Single Stage Electron Gun|Cathode Type=Tungsten Hairpin|Acceleration Voltage=50 KV|Stability=|Cathode Heating Methode=|Alignment Methode=|No. of Condensor Lenses=|Condensor Stability=|Condensor Stigmator=|Minimum Spot Size=|Condensor Alignment=|Condensor Lens Type=Electromagnetic|Holder Type=|Travel Range=|Obj. Focal Length=|Obj. Adjustment Range=|Obj. Spherical Error=|Obj. Stability=|Obj. Stigmator=|Obj. Alignment Aid=|Point Resolution=|Obj. Lens Type=Electromagnetic|No. of Proj. Lenses=|Proj. Stability=|Proj. Polpiece Config=Single Polpiece|Proj. Mag=|Proj. Alignment=|Proj. Lens Type=Electromagnetic}}
{{Tem list entry|Microscope Name=EM-2|Microscope Picture File=AEI-EM-2.png|Year=1946|Successor=EM-3|Magnification Range=|Magnification Gauge Type=|Specemin Chamber Pressure=|Power Consumption=|System Weught=|Accelerator Type=Single Stage Electron Gun|Cathode Type=Tungsten Hairpin|Acceleration Voltage=50 KV|Stability=|Cathode Heating Methode=|Alignment Methode=|No. of Condensor Lenses=|Condensor Stability=|Condensor Stigmator=|Minimum Spot Size=|Condensor Alignment=|Condensor Lens Type=Electromagnetic|Holder Type=|Travel Range=|Obj. Focal Length=|Obj. Adjustment Range=|Obj. Spherical Error=|Obj. Stability=|Obj. Stigmator=|Obj. Alignment Aid=|Point Resolution=|Obj. Lens Type=Electromagnetic|No. of Proj. Lenses=|Proj. Stability=|Proj. Polpiece Config=Single Polpiece|Proj. Mag=|Proj. Alignment=|Proj. Lens Type=Electromagnetic}}
+
{{Tem list entry|Microscope Name=EM-3|Microscope Picture File=AEI-EM3.png|Year=1949|Successor=|Magnification Range=|Magnification Gauge Type=|Specemin Chamber Pressure=|Power Consumption=|System Weught=|Accelerator Type=Single Stage Electron Gun|Cathode Type=Tungsten Hairpin|Acceleration Voltage=25, 50, 75, 100 KV|Stability=|Cathode Heating Methode=|Alignment Methode=|No. of Condensor Lenses=1|Condensor Stability=|Condensor Stigmator=|Minimum Spot Size=|Condensor Alignment=|Condensor Lens Type=Electromagnetic|Holder Type=|Travel Range=|Obj. Focal Length=|Obj. Adjustment Range=|Obj. Spherical Error=|Obj. Stability=|Obj. Stigmator=|Obj. Alignment Aid=|Point Resolution=|Obj. Lens Type=Electromagnetic|No. of Proj. Lenses=2|Proj. Stability=|Proj. Polpiece Config=|Proj. Mag=|Proj. Alignment=|Proj. Lens Type=Electromagnetic}}
+
{{Tem list entry|Microscope Name=EM-4|Microscope Picture File=|Year=1954|Successor=EM-6|Magnification Range=|Magnification Gauge Type=|Specemin Chamber Pressure=|Power Consumption=|System Weught=|Accelerator Type=|Cathode Type=|Acceleration Voltage=50 KV|Stability=|Cathode Heating Methode=|Alignment Methode=|No. of Condensor Lenses=1|Condensor Stability=|Condensor Stigmator=|Minimum Spot Size=|Condensor Alignment=|Condensor Lens Type=Electromagnetic|Holder Type=|Travel Range=|Obj. Focal Length=|Obj. Adjustment Range=|Obj. Spherical Error=|Obj. Stability=|Obj. Stigmator=|Obj. Alignment Aid=|Point Resolution=|Obj. Lens Type=Electromagnetic|No. of Proj. Lenses=2|Proj. Stability=|Proj. Polpiece Config=|Proj. Mag=|Proj. Alignment=|Proj. Lens Type=Electromagnetic}}
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+
{{Tem list entry|Microscope Name=EM-5|Microscope Picture File=|Year=1953|Successor=|Magnification Range=|Magnification Gauge Type=|Specemin Chamber Pressure=|Power Consumption=|System Weught=|Accelerator Type=Cockroft Walton Accelerator|Cathode Type=Tungsten Hairpin|Acceleration Voltage=500 KV|Stability=|Cathode Heating Methode=|Alignment Methode=|No. of Condensor Lenses=|Condensor Stability=|Condensor Stigmator=|Minimum Spot Size=|Condensor Alignment=|Condensor Lens Type=Electromagnetic|Holder Type=|Travel Range=|Obj. Focal Length=|Obj. Adjustment Range=|Obj. Spherical Error=|Obj. Stability=|Obj. Stigmator=|Obj. Alignment Aid=|Point Resolution=|Obj. Lens Type=Electromagnetic|No. of Proj. Lenses=|Proj. Stability=|Proj. Polpiece Config=|Proj. Mag=|Proj. Alignment=|Proj. Lens Type=Electromagnetic}}
{| class="wikitable"
{| class="wikitable"