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Spectrum* Stereo Zoom Microscopes
These microscopes feature a large magnification range and precision optics, which produce high-resolution, three-dimensional images. Other features include a 360° rotatable head, 10x wide-field eyepieces (DIN), total magnification range of 0.7x to 4.5x, coaxial rack-and-pinion focusing controls, three-way illumination (models 450-21418 and 450-21424) and a five-year limited warranty.
Magnification Configurations with 10X Eyepieces
Zoom Supplementary Field of View Working
Range Lens Distance (mm)
3.5x - 22.5x 0.5x 57.0 - 8.8 mm 150
7x - 45x none 28.5 - 4.4 mm 93
10.5x - 67.5x 1.5x 19.0 - 3.0 mm 49
14x - 90x 2.0x 14.2 - 2.2 mm 34