National Optical Model 410TBL-10

National Optical Model 410TBL-10

Model 410TBL-10
National Optical Model 410TBL-10
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National Optical Model 410TBL-10
Magnifications 10x and 30x with 10x eyepieces.
Precise optical alignment assures a three-dimensional, upright, unreversed image that is unsurpassed for everything from dissecting work to examining circuit boards. This model is a real workhorse for education or industry.
OPTICAL SYSTEM
Paired widefield eyepieces are 45 inclined, with diopter adjustment. Interpupillary adjustment from 55mm to 75mm. Accepts optional #965-400-05 or #965-400-10 eyepiece reticle.
Viewing head rotates 360, locks in place by tightening set screw.
Paired objectives are parfocalled, parcentered, and achromatic.
Magnification changed by rotating objective turret 90 to positive click stops.
ILLUMINATION
High intensity, 12v 10-watt incidental (top) light and 110v 15 watt transmitted (bottom) light.
4-position switch: top only, bottom only, top/bottom, off.
FOCUSING
Rack and pinion focusing with slip clutch and tension adjustment.
STAGE
80mm reversible black/white plastic contrast plate and 80mm frosted glass stage plate.
Blue filter for transmitted light.
Locked-on stage clips.
FRAME
Rugged, cast metal frame, gray enamel finish.
Height: 340mm (13-3/8 in.) extends to 370mm (14-9/16 in.) for larger objects.
Base width: 153mm (6 in.), Base depth: 218mm (8-9/16in.)
Net wt. 4.1 kgs (9 lbs)
Instruction brochure, eyeshields and vinyl dustcover.
WARRANTY
Lifetime limited warranty, excluding bulb, cord, and fuse.


Copyright © Edward Nightingale, Fort Myers, Florida
Enight@earthlink.net