Our basic National microscope used for high school instruction includes a mechanical stage for the precise control of the McMaster counting slide when doing egg per gram counts.  Includes fluorescent illumination.  Delivers higher light efficiency than standard 20 watt tungsten bulb, and cool operating temperature prolongs specimen life when viewing. Combines extra rugged construction with user-friendly features.    PRICE:  $285.00 + UPS shipping

       OPTICAL SYSTEM

• Widefield 10x eyepiece with revolving pointer. 45° inclined viewing head rotates 360° for easy sharing by more than one student, or for reverse position viewing.
• DIN standard, achromatic, parfocalled, parcentered, and color-corded:  4x (0.10 N.A.), 10x (0.25 N.A.), and 40xR (0.65 N.A.) objectives.
• 3-hole nosepiece is ball-bearing mounted for more precise alignment, has positive click stops.

ILLUMINATION
• Built-in fluorescent illumination with 5 watt bulb, delivers greater light and longer life than standard tungsten bulbs.  Virtually heat free operation.
• 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

• Separate low position coarse and fine focusing controls.
• Stage moves up or down, eyepiece and body remain fixed.
• Coarse focusing has slip clutch to prevent damage to focusing system.
• Tension adjustment eliminates stage drift.
• Safety rack stop prevents damage to slides and objective lenses.


STAGE

• Large 110mm x 120mm (4-3/8 in. x 4-3/4 in.) stage, with locked-on spring mounted stage clips, is drilled and tapped to accept optional mechanical stage (Model 138-MS).
• Built-in 0.65NA condenser lens.
• Calibrated 5-hole disc diaphragm.


FRAME

• Rugged cast metal, gray enamel finish.
• Height  365mm (14-1/2 in.).  Net wt. 3.4 kgs (7.4 lbs).


PACKING

• Molded styrofoam container with instruction brochure and vinyl dustcover. 
• Individual:  Ship wt. 5 kgs (11 lbs), Dimensions 550x325x325mm (22x13x13 in.) 
• Master carton pack 4 each:  Ship wt. 17.7 kgs (39 lbs), Dimensions 775x325x475mm (31x13x19 in.)


WARRANTY

• Limited lifetime warranty, excluding bulb, cord, and accessory mechanical stage.

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.  Chalex model comes with mechanical stage, necessary for use in egg per gram fecal counts with our system. COST:  $365.00 + UPS shipping

OPTICAL SYSTEM

• Widefield 10x eyepiece with pointer. 45° inclined monocular viewing head rotates 360° for easy sharing by more than one student.
• Objectives are supplied for 40x, 100x and 400x magnification. 3-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.

FOCUSING

• Separate low position coarse and fine focusing controls.
• Stage moves up or down, eyepiece and body remain fixed.
• Safety rack stop prevents damage to slides and objective lenses.

• Large 120mm x 125mm (4-3/4 in. x 5 in.) stage with mechanical stage 

FRAME

• Rugged cast metal, gray enamel finish.
• Height 380mm (15 in.).  Net wt. 4 kgs (9 lbs).

• Molded styrofoam container with instruction brochure and vinyl dustcover. 
• Individual:  Ship wt. 6.4 kgs (14 lbs), Dimensions 550x375x375mm (22x15x15 in.) 

• Limited lifetime warranty, excluding bulb, fuse, cord, and accessory mechanical stage.

Microscope Model 157 A new standard of precision optics, highly engineered mechanics and very rugged construction, all at little more cost than a budget microscope.  Binocular for ease of use and minimal eye strain.  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.  Includes necessary mechanical stage for egg per gram fecal work.  COST:  $650.00 + UPS shipping. OPTICAL SYSTEM Widefield 10x eyepieces with pointer.  45° inclined binocular viewing head rotates 360° for easy sharing by more than one. DIN standard 4x (0.10 N.A.), 10x (0.25 N.A.), 40xR (0.65 N.A.) and 100xR (1,25 N.A.) objectives are supplied for 40x, 100x, 400x and 1000x magnification.  All are achromatic, parfocalled, parcentered and color-coded.. 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.).  Net wt. 4.6 kgs (11 lbs). PACKING Molded styrofoam container with instruction brochure and vinyl dustcover.  Individual:  Ship wt. 7.5 kgs (17 lbs), Dimensions 550x375x375mm (22x15x15 in.)  WARRANTY Limited lifetime warranty, excluding bulb, cord, and fuse. Please see our Order page which can be printed and faxed to us. Chalex Corporation Fax 541-886-3300; E-mail Chalex Corporation