AmScope 3.5X-180X Simul-Focal Stereo Boom Stand Microscope Adjustable Boom Stands with stereo microscopes let you adjust the microscope head around three axes (x, y, and z) and precisely adjust the microscope to point at a specimen in any direction. They come in single and double-boom arm models. Specifications : Head: 45-degree inclined, 360-degree swiveling trinocular Eyepieces: 30mm super widefield high-eyepoint (WF10X/20) Objective: 0.7-4.5X Zoom Range: 6.5:1 Maximum Field of View: 1-1/4″ (31.75mm) Minimum Field of View: 3/16″ (2.5mm) Interpupillary Distance: 2-3/4″ – 2-15/16″ (47-75mm) Working Distance: 4″ (100mm) Head Mounting Size: 3″ (76mm) diameter Accessory Mounting Size: 1-7/8″ (48mm female thread) diameter Boom Stand: 20″ double-arm (overall length: 30″), 17″ high pillar, 10-1/4″x8-1/4″x2-0″ solid cast steel base Packing List: One Trinocular Simul-Focal Stereo Zoom Head One Pair of Super Widefield 10X Eyepieces One Double-Arm Boom Stand One Focus Rack
