National 131-RLED Inclined Monocular Microscope with Cordless LED Illumination

National 131-RLED Inclined Monocular Microscope with Cordless LED Illumination


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Product Highlights

  • 4x, 10, 40xR DIN Achromatic Objectives
  • 40x, 100x, 400x Magnification
  • Widefield 10 Eyepiece with Pointer
  • 45° Monocular Viewing Head
  • Head Rotates 360°
  • Focusing Safety Features
  • LED Illumination
  • Rechargeable Battery Powered
  • Batteries Charged w/ Included Adapter
  • Lifetime Warranty
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You Pay: $269.00

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The National Optical & Scientific Instruments 131-RLED Inclined Monocular Microscope with Cordless LED Illumination is a budget-friendly tool for the classroom. In addition to its low price point it also keeps the cost of powering the LED light at minimum. Three rechargeable AA Ni-MH batteries run the light. With the ability to be recharged up to 1000 times, they're a cost-effective solution. The microscope also features a battery charging adapter which automatically shuts off when the batteries are ready for use, preventing damage due to overcharging.

The optical system of the 131-RLED is centered around 4x, 10x, and 40xR DIN standard objectives. Controlled by a 3-hole objective turret, magnification can be easily adjusted from 40-400x. The 45° inclined monocular is obviously a vital part of the microscope. It features a widefield 10x eyepiece with a revolving pointer and the ability to rotate 360° for sharing with other students.

When it comes to focusing the 131-RLED has low position coarse and fine controls. Safety features such as the slip clutch, tension adjustment, and safety rack stop all ensure that students can't over turn or otherwise damage the system.

Optical System
  • Widefield 10x eyepiece with revolving pointer. Accepts optional #965-160 eyepiece reticle
  • 45° inclined monocular viewing head rotates 360° for easy sharing by more than one student
  • DIN standard 4x (0.10 N.A.), 10x (0.25 N.A.) and 40xR (0.65 N.A.) objectives are supplied for 40x, 100x and 400x magnification. All are achromatic, parfocalled, parcentered and color-coded
  • 3-hole objective turret, ball-bearing mounted for smooth, precise changes in magnification
  • Low position coarse and fine focusing controls
  • Slip clutch prevents damage from over focusing
  • Tension adjustment eliminates stage drift
  • Safety rack stop prevents damage to slides and objectives lenses
  • Cool running LED light rated up to 50,000 hours of life
  • Rechargeable batteries can be recharged up to 1000 times
  • Battery recharge adapter with auto shut-off (included)
Microscope Type Compound
Head Monocular
Magnification 40x, 100x, 400x
Objectives DIN Achromat 4x, 10x, 40xR
Eyepiece Widefield 10x, 18mm
Light Source LED
Electrical 3 rechargeable AA Ni-MH batteries (recharge up to 1000 times)
Stage 4.3 x 4.7" (110mm x 120mm) stage, with locked-on spring mounted stage clips, drilled and tapped to accept optional mechanical stage
Nosepiece 3-hole click stop, ball-bearing mounted
Lens (Condenser) Built-in 0.65 N.A. condenser lens, calibrated 5-hole disc diaphragm
Overall Dimensions Height: 14.2" / 360mm
Weight 6.8 lb / 3.1kg
National 131-RLED Inclined Monocular Microscope with Cordless LED Illumination
  • Battery Adapter
  • Lifetime Limited Warranty
  • Be the first to review this item

    Care & Cleaning

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    Help keep your optics clean with these tools.

    Pearstone - Microfiber Cleaning Cloth, 18% Gray (7 x 7.9")
    • You Pay: $5.00

    Prepared Slides & Slide Sets

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    Discover a wide assortment of ready-made specimen slides, for education and fun.

    Celestron - Prepared Microscope Slides (25 piece set)
    • You Pay: $14.79

    Blank Slides & Cover Slips

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    Mount your own insects, arachnids, and other specimens.



    Celestron Blank Microscope Slides (72 pieces)
    Celestron - Blank Microscope Slides (72 pieces)
    • You Pay: $3.49


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    Capture images from under your microscope's lenses, on screen, with a digital microscope imager.

    Celestron - Digital Microscope Imager
    • You Pay: $48.99

    Smartphone Adapters

    Capture photos or videos with a smartphone on your microscope without removing eyepiece.

    Carson - HookUpz Universal Optics Adapter for Smartphones
    • You Pay: $50.00

    Mount (fits most smartphones) and capture photos or videos with a smartphone on your telescope.

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