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National Optical Model 156-S Advanced High School, University & Laboratory (with 100x oil)
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| Click to enlarge image(s) |
Din 4x, 10x, 40xR, 100x oil
5 watt Fluorescent illumination
1.25 Abbe condenser
Mechanical stage (slide holder)
A new standard of precision optics, highly engineered mechanics and very rugged construction, all at little more cost than a budget microscope. Objective turret (nosepiece) is in reverse position to permit easier changing and positioning of specimen slides. Preferred by teachers, the 5-watt fluorescent illumination system provides optimum image brightness, virtually no bulb heat and has a 10,000-hour rated bulb life.
OPTICAL SYSTEM
Widefield 10x eyepiece with 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.) 100x oil objectives are supplied for 40x, 100x, 400x and 1000x magnification.
All are achromatic, parfocalled, parcentered and color-coded.
4-hole objective turret, reverse position, ball-bearing mounted for smooth, precise changes in magnification.
ILLUMINATION
Built-in 5-watt fluorescent illumination, delivers greater light and longer life than standard 20-watt tungsten bulb. Virtually no base heat. 10,000 hour rated bulb.
Base mounted on/off switch, heavy-duty 3-wire grounded electrical system and plug.
0.5A time delay fuse.
FOCUSING
Separate 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 135mm x 135mm (5-1/4 in. x 5-1/4 in.) stage, with professional quality, low profile mechanical specimen holder with low-position coaxial x-y controls.
1.25 N.A. Abbe condenser with spiral focusing mount, iris diaphragm, swing-out filter holder, blue filter supplied.
FRAME
Rugged cast metal, gray enamel finish.
Height 380mm (15 in.).
PACKING
Molded styrofoam container with instruction brochure and vinyl dustcover.
Individual: Ship wt. 7 kgs (15 lbs),
WARRANTY
Lifetime limited warranty, excluding bulb, cord and fuse.
National Optical Model 131-CLED Microscope National Optical Model 131-CLED Microscope
The microscope model that sets the standard for high school instruction, now with cool, long life LED illumination. Includes all the most commonly specified features. Rugged metal construction, locked-on parts. Superior DIN optical system and precision mechanical components assure parfocalled and parcentered optical alignment for sharp, unsurpassed viewing. Recommended for instruction through grade 12.
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National Optical Model 162, Compound Microscope, College Level Model 162, Compound Binocular Microscope
DIN standard 4x (0.10 N.A.), 10x (0.25 N.A.), 40xR (0.65 N.A.) and 100xR oil immersion (1.25 N.A.) achromatic objectives. All are parfocalled, parcentered and color-coded
College Level Microscope
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National Optical Model 460TBL-10 Stereo Zoom 10x through 30x National Optical Model 460TBL-10
An exceptional stereo zoom microscope at an exceptionally low price. Permits students to view the wide picture at 10x magnification, then zoom all the way to 30x for an exciting close-up view.
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