MONOCULAR MICROSCOPE (NATIONAL MODEL 131)
- Expiry Date: 0000
- Availability: In Stock
The National Optical & Scientific
Instruments Model 131 Compound Microscope is a budget-friendly
microscope designed for high school use. Featuring a design focused on safety
and effective use.
The microscope's optics include DIN
4x, 10x, and 40xR achromatic, parfocalled, parcentered, color coded objectives.
A widefield 10x eyepiece with a revolving pointer sits at a 45° incline and can
be rotated 360° for sharing by multiple students.
When it comes to focusing, the Model
131 is both precise and controlled. The slip clutch prevents damages to the
unit from over focusing, while the safety rack stop prevents damage to slides
and objective lenses. The tension adjustment eliminates stage drift, while the
low position and fine focus controls allow students to get an accurate view of
specimens.
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, color coded
·
3-hole nosepiece is ball-bearing
mounted for more precise alignment, has positive click stops
Illumination
115V 20 watt tungsten illumination, condenser and blue
filter, base-mounted on/off switch, heavy duty 3-wire cord. Convenient
"grabber" clip on plug lets you wrap the cord around microscope and
secure in place by pushing cord into clip for easy storage. No bulky cord
hanger needed
Focusing
·
Low position coarse and fine
focusing controls
·
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 4.3 x 4.7" / 110 x 120mm
stage, with locked-on, spring mounted stage slips, drilled and tapped to accept
optional mechanical stage
·
Built-in 0.65NA condenser lens
·
Calibrated 5-hole disc diaphragm
Frame
·
Rugged cast metal, gray enamel
finish
·
Base: 5.25 x 7" / 133 x 175mm
·
Height: 14.2" / 360mm; Net
weight: 6.8 lb / 3.1kg