Advanced or industrial uses (cell phone or computer circuitry), dual variable intensity illumination, may include a trinocular head for camera attachments, or boom mount for industrial applications. Baytonix 10x - 30x Stereo Boom Trinocular Microscope, X & Y Axis Adjustable $612.00 Baytronix 10x - 30x stereo binocular microscope with dual variance halogen lighting system $253.00 Baytronix 10x - 30x Stereo Boom Binocular Microscope, X & Y Axis Adjustable $370.00 Baytronix 10x - 30x Stereo Trinocular Microscope with Dual Variable Halogen Lighting System $385.00 Baytronix 20 x - 40x Stereo Trinocular Microscope with Dual Variable Halogen Lighting System $360.00 Baytronix 20x - 40x Stereo Boom Binocular Microscope, X & Y Axis Adjustable $625.00 20x - 40x Stereo Boom Trinocular Microscope, X & Y Axis Adjustable $622.00