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National Model 120-L Student compound microscope
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National Model 120-L
Extra rugged, large frame with full sized DIN optical system. Less expensive vertical tube design affords full-sized, high school features and specifications in a very affordable price range. Solid, full-feature performance for instruction through grade 12.
OPTICAL SYSTEM:
Widefield 10x eyepiece with revolving pointer.
45mm DIN objectives are achromatic, parfocalled, parcentered, color coded: 4x (0.10N.A.), 10x (0.25N.A.), 40xR (0.65N.A.).
Revolving triple nosepiece with positive click stops.
ILLUMINATION:
Model 120-L with factory mounted 115v 15 watt substage illuminator with in-line on/off switch.
FOCUSING:
Rack and pinion coarse focus, plus graduated fine focus.
Slip clutch prevents damage to focus mechanism.
Tension adjustment eliminates focusing drift.
Safety rack stop prevents damage to slides and objective lenses.
STAGE:
Large 125mm x 115mm (5 in. x 4-1/2 in.) stage, with locked-on stage clips, is predrilled and tapped to accept optional mechanical stage.
In-stage 0.65NA condenser lens.
Calibrated 5-hole disc diaphragm.
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Hacker Safe
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