National 131-MS Compound Microscope

National 131-MS Compound Microscope

National 131-MS Compound Microscope

B&H # NACM131MS MFR # 131-MS
Special Order
Expected availability: 7-10 business days

Product Highlights

  • 10.0x Eyepiece
  • 20w Tungsten Illumination
  • 4.0x, 10.0x, 40.0x Objectives
  • 45° Inclined Viewing
  • DIN Optical System
  • 360° Rotating Head
  • Cast Metal Frame
  • Mechanical Stage
  • 110x120mm Stage
  • 3-Hole Nosepiece
Show moreShow less
$0.00 Tax Collected Outside NY and NJ

You Pay: $299.00

Add to Wish List Item in Wish List

National 131-MS overview

  • 1Description

The 131-MS Compound Microscope from National Optical is a versatile user-friendly compound microscope designed to facilitate teaching at the high school level using the standard format used in schools through grade twelve. The student-proof design decreases the likelihood of lost parts or mishandling.

This model of the 131-MS is configured with an inclined 10x eyepiece for easy viewing when seated, achromatic 4x/10x/40x objectives mounted on a rotating turret, and low position knobs for precise focusing between coarse and fine focus ranges. The included mechanical stage is a useful graduated specimen holder with top-mounted x/y controls for precise positioning of slides and other objects on the viewing stage.

Optical System

Widefield 10x eyepiece with revolving pointer
Achromatic parfocalled and parcentered 4x, 10x, 40x objectives
3-hole ball bearing mounted nosepiece
45° inclined eyepiece
360° rotating head


Durable 14" (36 cm) cast metal frame
Graduated mechanical specimen holder
Large 110 x 120mm stage with locked-on, spring-mounted stage clips, calibrated 5-hole disc diaphragm
Low position coarse and fine focusing controls with slip clutch, tension adjustment, and rack stop


115v 20w tungsten incandescent with condenser lens and blue filter
Heavy-duty grounded power cord
On/Off switch
In the Box
National 131-MS Compound Microscope
  • Limited Lifetime Warranty
  • Table of Contents
    • 1Description

    National 131-MS specs

    Microscope Type Compound
    Eyepiece 45° inclined, Widefield 10.0x
    Nosepiece 3-hole ball-bearing mounted
    Objective(s) 4.0x, 10.0x, 40.0x
    Head Rotating 360°
    Light Source 115v 20w tungsten incandescent
    Light Control On/Off
    Specimen Stage 4.33 x 4.75" (110 x 120 mm)
    Frame Dimensions 14.2 x 7 x 5.25" (36 x 17.5 x 13 cm)
    Frame Weight 6.8 lb (3.1 kg)

    National 131-MS reviews

    Be the first to review this item

    National 131-MS Q&A

    National 131-MS accessories