National Optical 420T-430PLL-10 420T Series Trinocular Zoom Stereo Microscope 1X-4X Zoom (10-40X Mag.)

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. Trinocular port accepts video or SLR adapters (included).

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°.
• Continuous magnification from 10x thru 40x.

Illumination

• Top light is LED with directional beam and rheostat control.
• Bottom light is LED 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.
• 110V-240V internal auto-switching power supply.
• Supplied with American style IEC power cord.
• Additional wall adapter for 240V operation required.

Focusing

• Large dual focusing knobs with slip clutch to prevent damage to mechanism.
• Tension adjustment eliminates focus 'drift'.

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 post mount with locking support collar, permits up or down adjustment of viewing head to accommodate different sized objects on stage.
• Height: 340mm (13-3/8 in.) extends to 433mm (17 in.) for larger objects.
• Base width: 171mm (6-3/4 in.), Base depth: 242mm (9-1/2 in.)

Packing

• Molded styrofoam container with rubber eyeshields and vinyl dustcover.