National 420-430AHF-10 Stereo Zoom Microscope

The convenience and versatility of viewing a large picture at 10x magnification, then zooming continuously all the way to close-up detail at 40x magnification. Upright, unreversed 3-dimensional image remains in focus throughout zoom range. Optional eyepieces and auxiliary objectives expand magnification range and working distances.

Features top light with directional beam, bottom light with cool, long-life fluorescent illumination.

MAGNIFICATION

• 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

FOCUSING

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

ILLUMINATION

• Top light is 12v 15 watt halogen, bi-pin with directional beam and rheostat control.
• Bottom light is 110v 5 watt fluorescent for cool operation, greater light efficiency.
• Base mounted light controls permit choice of top only, bottom only, or dual illumination.
• Heavy-duty 3-wire grounded cord and plug.
• Available with 110v or 220v (220v is CE approved and supplied with European plug). To order 220v, add -220V to end of model number.

STAGE

• Two 80mm stage plates (frosted glass and reversible black/white plastic contrast plates).
• Blue filter for transmitted light.
• Locked-on stage clips

FRAME

• Professional, all-metal frame, gray enamel finish.
• Heavy-duty fixed arm stand. Note: #705-420 0.5x auxiliary objective is not operational on this particular frame.
• Height: 340mm (13-3/8 in.).
• Base width: 171mm (6-3/4 in.), Base depth: 242mm (9-1/2 in.)
• Net wt. 5.3 kgs (11.7 lbs)

PACKING

• Molded styrofoam container with rubber eyeshields and vinyl dustcover.
• Individual: Ship wt. 7.7 kgs (17 lbs), Dimensions 550x375x375mm (22x15x15 in.)
• Master carton pack 2 each: Ship wt. 14.4 kgs (32 lbs), Dimensions 475x375x475mm (19x15x19 in.)

WARRANTY

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