National Optical Model 131-RLED Intermediate Compound Microscope

The microscope that sets the standard for high school instruction, now with the freedom of rechargeable batteries. Includes all the most commonly specified features, like rugged metal construction and locked-on parts. Superior DIN optical system and precision mechanical components assure parfocalled and parcentered optical alignment for sharp, unsurpassed viewing. Utilizes rechargeable batteries for bright, cool illumination from long-life LED bulbs.

OPTICAL SYSTEM

• Widefield 10x eyepiece with revolving pointer. Accepts optional #965-160 eyepiece reticle.
• 45° inclined viewing head rotates 360° for easy repositioning of eyepiece and sharing by more than one student.
• DIN 4x, 10x, and 40xR, objectives are achromatic, parfocalled, parcentered, and color coded.
• 3-hole nosepiece is ball-bearing mounted for more precise alignment, and has positive click stops.

ILLUMINATION

• LED light rated up to 50,000 hours life, illumination equal to a 20 watt tungsten bulb.
• Batteries allow up to 500 recharges, for a total of 20,000 to 25,000 hours use from a single set of 3 AA rechargeable nickel hydride batteries. Battery charger included with microscope, automatically shuts off when batteries fully charged, no danger of overcharging batteries and shortening battery life. No expensive recharger station needed. Plug directly into wall outlet, or use ordinary, inexpensive power strip for recharging multiple microscopes. Indicator light changes from red to green when fully charged.
• Single 8 hour charge allows up to 50 hours of use.
• Variable on/off light control

FOCUSING

• Rack & pinion coarse focus with tension adjustment, slip clutch, separate fine focus.
• Stage moves up or down, eyepiece and body remain fixed.
• Slip clutch prevents damage to focusing system.
• Tension adjustment eliminates stage drift.
• Safety rack stop prevents damage to slides and objective lenses.

STAGE

• Large 110mm x 210 mm stage, with locked-on, spring mounted stage clips, drilled and tapped to accept optional mechanical stage.
• Built in 0.65 condenser lens

FRAME

• Rugged cast metal, gray enamel finish.
• Height 360mm (14-1/8 in.) Net wt. 3.1 kgs (6.8 lbs)

PACKING

• Molded styrofoam container with vinyl dustcover
• Individual: Ship wt. 4.5 kgs (10 lbs.), Dimensions 550x325x325mm (35x12x18 in.)
• Master carton pack 5 each: Ship wt. 19.5 kgs (43 lbs.), Dimensions 875x300x450mm (35x12x18 in.)

WARRANTY

• Lifetime limited warranty, excluding bulb and batteries.

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