National 420-1105-10 Stereo Zoom Microscope On Boom Stand

• 1x to 4x Zoom

OPTICAL SYSTEM

• Paired widefield 10x eyepieces are 45° inclined, with dual diopter adjustments, interpupillary adjustment from 55mm to 75mm. Accepts 23mm eyepiece reticle.
• Viewing head rotates 360°.
• Achromatic, color corrected lenses.
• Continuous magnification from 10x thru 40x. See specification chart for full magnification range available with use of optional auxiliary lenses

• Rack and pinion focusing with large dual focusing knobs with slip clutch to prevents damage to mechanism. Tension adjustment eliminates focus 'drift'.

• No built-in illumination is included with this model.

• Professional, all-metal stand.
• Heavy-duty post mount with locking support collar, permits up or down adjustment of viewing head to accommodate different sized objects.
• Total stand height: 386mm (15.4 in.). Net weight: 18.1 kgs (40 lbs).
• Base diameter: 200mm (8 in.). Base height: 55mm (2.2 in.)
• Vertical post length: 331mm (13.2 in.). (O.D. 25mm)

• Distance between main vertical post and center of field of view, when horizontal bar is adjusted to minimum or maximum extension: Minimum = 255mm, Maximum = 455mm
• Distance from bottom edge of objective lens and work surface when horizontal bar is adjusted to minimum or maximum height:
• With pivot arm up: Minimum = 170mm (6.8 in.), Maximum = 515mm (20.6 in.)
• With pivot arm down: Minimum = 58mm (2.3 in.), Maximum = 260mm (10.4 in.)

• Head, focusing block and universal stand are in separate molded styrofoam containers with vinyl dustcover and eyeshields.
• Master carton pack 1 each:
• Head & focusing block: Ship wt. 4.1 kgs (9 lbs), Dimensions 400x425x275mm (16x17x11 in.)
• Universal boom stand: Ship wt. 19.1 kgs (42 lbs), Dimensions 500x325x300mm (20x13x12 in.)

• Lifetime limited warranty excluding bulb, cord, and fuse.