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National 211-RLED Three Objective Cordless Microscope(National 211 Rled Three Objective Cordless Microscope)

Original price was: $379.00.Current price is: $98.99.

SKU: DGFUB 8907236368 Categories: Microscopes, Optics, Optics & Surveillance Tags: Microscopes, National 211-RLED, Optics & Outdoors

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Description
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DIN 4x / 10x / 40xR Objectives
10x Wide Field Eyepiece
40x / 100x / 400x Magnification
Achromatic / Parfocalled / Parcentered
Fine / Coarse Focusing
LED Illumination Equivalent to 20W Bulb
1.25 NA Abbe Condenser Lens
Mechanical Stage & Movable Slide Holder
Ball Bearing Turret Mount
Cast Metal Frame & Gray Enamel Finish

The 211-RLED Cordless Microscope from National Optical is a three-objective single viewing microscope with a 45ï¿½ inclined monocular. The three objectives are located on rotating turret with a ball bearing mount. The turret has four holes and can accommodate a fourth objective. Both the turret and the included objectives adhere to the DIN microscope objective standard. Therefore, you can use any commercially available DIN objective with this microscope.

The supplied objectives have achromatic lenses which reduce color distortions introduced by imperfections in optical elements. Reducing these color distortions allows you to see sharper images and true colors. The parfocalled and parcentered design allows for switching objectives without having to realign your sample and without losing focus. The microscope also features a wide field 10x eyepiece and has a fine and a coarse focus adjustment.

The LED illumination system has adjustable brightness which is controlled by a rheostat. It delivers light intensity equivalent to that of a 20W incandescent bulb. The light from the bottom LED emitter is focused on the sample with a 1.25 NA Abbe condenser.

The 5.3 x 5.3″ mechanical stage has adjustable height, a movable slide holder and allows you to move specimen slides in X-Y plane. The slide holder bracket holds your slides securely in place. The frame of the microscope is made of cast metal with gray enamel finish.

Included with the microscope are three rechargeable AA NiMH batteries, battery charger, a dustcover, and two Allen wrenches for rack stop adjustment and eyepiece socket tension adjustment.

Optical System

Eyepiece: 10x wide field
DIN 4x, 10x, 40xR objectives
The 40xR objective is retractable
Total magnification: 40x, 100x and 400x
Achromatic, parfocalled and parcentered lenses
Monocular is inclined 45ï¿½
Head rotates 360ï¿½

Focusing

Separate fine and coarse focusing
Slip clutch prevents damage to focusing system
Tension adjustment eliminates stage drift
Safety rack stop prevents damage to slides and objective lenses

Illumination

LED illumination equivalent to a 20W tungsten bulb
Rheostat intensity control
1.25 N.A. Abbe condenser lens with spiral focusing mount
Iris diaphragm, swing-out filter holder, blue filter

Stage

Mechanical stage
X-Y slide motion control
Stage size: 5.3 x 5.3″
Adjustable stage height
Movable specimen slide holder

Construction Details

Objective turret:
– Four objective holes
– Reverse position
– Mount with ball bearings
Cast metal frame with handles
Gray enamel finish

In the Box

National 211-RLED Three Objective Cordless Microscope

3 x AA NiMH, Rechargeable Batteries
802-003 Auto Cut-Off Recharger
Dustcover
2 x Allen Wrenches
Limited Lifetime Warranty

Microscope Type	Compound
Eyepiece	10x, wide field
Nosepiece	Reverse
Objective(s)	DIN 4x, 10x, 40xR
Head	Rotating 360ï¿½
Focuser	Fine / Coarse
Light Source	LED
Light Control	Rheostat
Specimen Stage	5.3 x 5.3″ (135 x 135 mm)
Battery / Runtime	3 x AA NiMH, rechargeable / 50 hr max
Charging Time	8 hr minimum
Overall Dimensions	22 x 16 x 10″ (56 x 41 x 25cm)
Weight	14 lb (6.4 kg)

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