AmScope 40X-1000X Super Widefield Polarizing Metallurgical Inverted Microscope + 10MP Digital Camera Professional Polarizing Metallurgical Inverted Microscope 40X-1000X Seven Super Widefield Metallurgical Optics Inverted Design for Viewing Large Specimen Sturdy Metal Framework with Coaxial Coarse &amp; Fine Focus 30W EPI-Kohler Wide Band (85V-230V) Halogen Illumination