- Standard Magnification range of 7.0X - 45X.
 - 10X eyepieces and eyeshields included.
 - 23mm optics system – Provides increased working distance and 15% greater field of view.
 - Extended Magnification range from 3.5X to 180X when using optional eyepieces and accessory lenses
 - .
 - Standard working distance - 118mm(4.6”); Maximum working distance - 195mm(7.7”).
 - ESD-Safe models available - Body and Stand are powder-coated with a metal-laced paint that measures 105 Ω/sq. (static dissipative).
 - Sturdy, heavy duty, cast aluminum alloy housing.
 - Head can be rotated 360° in its focus mount.
 - Available with Dual Boom Ball-Bearing Stand, Single Boom Stand or Articulating Arm with Clamp.
 - Ergonomic knob adjustments (both left and right sides) to control zoom.
 - Binocular style interpupilary adjustment.
 - Each eyepiece has adjustable diopter setting.
 - 5 year warranty.
 
                    Unit of Measure
                    
               
        
            
                                                                                System | 
                                                                        N/A 273RB-ESD | 
                                                                                Mounting | 
                                                                        N/A Ball Bearing Boom Stand | 
                                                                                Light Source | 
                                                                        N/A None | 
                                                                                Feature | 
                                                                        N/A ESD Safe | 
                                                                                Eyepieces | 
                                                                        N/A 10X | 
                                                                                Stereo-Zoom Range | 
                                                                        N/A 0.7X to 4.5X | 
                                                                                Magnification Range | 
                                                                        N/A 7.0X to 45X | 
                                                                                F.O.V. | 
                                                                        N/A 32.8 to 5.1 mm | 
                                                                                Working Distance | 
                                                                        N/A 118 mm | 
                                                                                Country of Origin | 
                                                                        N/A China | 
