National 165 Binocular Microscope
Superior in design and in performance, the 165 series incorporates a wide range of features designed for university and laboratory use. Superb optical clarity and reliable mechanical engineering assure years of top performance. Choose from three grades of objective lenses: ASC High Contrast lenses deliver excellent image contrast, Plan achromatic for superior clarity and flatness of field, and Phase Contrast lenses for viewing live specimens which require additional background contrast.
SPECIFICATIONS
OPTICAL SYSTEM
Widefield 10x /18mm eyepieces, pointer standard
in one eyepiece. Accepts optional #965-165 eyepiece reticle.
Binocular viewing head with 30° inclined eyepieces, with dual diopters,
interpupillary adjustment 54mm to 76mm, rotates 360° for easy sharing
by more than one student.
Siedentopf head. Tube length remains constant when changing interpupillary
distance
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.) objectives. Choose from super high contrast,
or Plan, or Phase. All are parfocalled, parcentered and color-coded.
Quintuple objective turret is ball-bearing mounted for smooth, precise
positioning of objectives, features textured rubber knurling for easy
grip. Mounted in reverse position to facilitate ease in changing slides.
ILLUMINATION
12v 20 watt halogen with variable rheostat control.
Koehler type illumination with field iris diaphragm
Illuminated on/off switch, 3-wire grounded cord and plug.
0.5A time delay fuse.
Light house with filter holder, includes clear, blue, green and yellow
filters
FOCUSING
Coaxial coarse and fine focusing controls, coarse has tension adjustment, fine is graduated.
STAGE
Large 140mm x 135mm (5-1.2 in. x 5-1/4 in.) stage;
built-in, low profile, ball-bearing mounted mechanical specimen holder
with low-position coaxial controls, 70mm (x) by 50mm (y) movement with
graduations of 0.1mm.
1.25 N.A. Abbe condenser is centerable, and has rack & pinion focusing,
iris diaphragm, swing-out filter holder with clear blue, green and yellow
filters supplied.
FRAME
Rugged cast aluminum, gray enamel finish.
Base dimensions: 185mm x 235mm (7-1/4 in. x 9-1/4 in.)
Height 395mm (15-1/2 in.). Net wt. 6.7 kgs (14.7 lbs)
PACKING
Head and frame in separate molded styrofoam container
with instruction brochure and vinyl dustcover.
Individual: Ship wt. 8.0 kgs (18 lbs), Dimensions 550x325x325mm (22x13x13
in.)
Master carton pack 1 each: Ship wt. 8.0 kgs (18 lbs), Dimensions 550x325x325mm
(22x13x13 in.)