National 131-SPMS Monocular Microscope

National

$395.00  $439.00

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The microscope model that sets the standard for high school instruction. 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.


OPTICAL SYSTEM

  • Widefield 10x eyepiece with revolving pointer. Accepts optional #965-160 eyepiece reticle.
  • Monocular 45° inclined viewing head rotates 360° for easy repositioning of eyepiece and sharing by more than one student.
  • DIN 4x, 10x, 40xR and 100xR objectives are achromatic, parfocalled, parcentered, color coded.
  • 4-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.

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 120mm x 120mm (4-3/4 in. x 4-3/4 in.) stage, with professional quality, low profile mechanical specimen holder with low-position coaxial x-y controls.
  • Built-in 1.25 N.A. Abbe condenser with iris diaphragm.

FRAME

  • Rugged cast metal, gray enamel finish.
  • Base dimensions: 133mm x 175mm (5-1/4 in. x 7 in.)
  • Height: 360mm (14-1/8 in.) Net wt. 3.5 kgs (7.8 lbs)

WARRANTY

Lifetime limited warranty, excluding bulb, cord, and accessory mechanical stage
 

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