National Optical Dual Magnification (1X/3X) Stereo Microscope

All the quality features and versatility of larger stereo microscopes, in a compact size that is more efficient for many uses. Choose low or high magnification simply by turning the objective turret. **MAGNIFICATION** - 1x & 3x **OPTICAL SYSTEM** - Paired widefield eyepieces with diopter adjustment on left side. Interpupillary adjustment from 55 mm to 75 mm. Reticle holder/retainer accepts eyepiece reticle with 23 mm O.D. - Magnification changed by rotating objective turret 90 degrees, to positive click stop. - Working distance: 47 mm. Maximum specimen height on stage, 35 mm - Head rotates 360 degrees to permit reverse head position viewing. **ILLUMINATION** - High intensity 12 V, 10 W incidental and transmitted illumination is built-in. - Separate base mounted switches control power on/off, top and bottom lights, permit use of top light only, bottom light only, top and bottom lights together. **FOCUSING** - Rack & pinion focusing has slip clutch to protect mechanism against over-turning, and special tension adjustment. **STAGE** - Supplied with two 80 mm stage plates, one frosted glass and one plastic black/white reversible contrast. Two locked-on stage clips.