Tender For purchase computer accessories - metallurgical microscope trinocular vertical metallurgical microscope with plan optics and incident light illumination objectives: plan m achromatic objectives -10x, 20x, 50x, 100x (oil) eyepieces: wide field wf-10x magnification range: 100x - 1000x (standard) mechanical stage: co- axial mechanical square stage 200mm x 152mm magnification changer: quadrupule ball bearing revolving changer for perfect alignment observation tube: high transmission trinocular head equipped with 45o inclined observation tubes and adjustable interpupillary distance 55-75mm illumination: built in koehlers incident illuminator with 6v 20w halogen lamp, field and aperture diaphragm with yellow, green and blue filters focusing: coarse and fine co-axial focusing on ball track movement for greater reliability. coarse motion range 35mm. fine focusing range 1.4mm measuring scale reticule 10/100 camera adaptor: c-mount adaptor 1x 0.5 x reduction lens adaptor