National 161 w/ Dual Viewing Head
Superior in design and in performance, the 160 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 four grades of objective lenses: Standard achromatic lenses deliver excellent clarity and normal flatness of field; ASC high contrast deliver extra image contrast; Semi-plan for extra flatness of field; Plan achromatic for superior clarity and flatness of field.
SPECIFICATIONS
OPTICAL SYSTEM
Widefield 10x /18mm eyepiece, pointer standard
in one eyepiece. Accepts optional #965-160 eyepiece reticle.
Dual viewing head with 30° inclined eyepiece, and vertical eyepiece
with diopter, rotates 360° for easy sharing by more than one student.
Permits dual viewing, or mounting of optional video adaptor on vertical
tube.
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 achromatic, super
high contrast, or plan. All are parfocalled, parcentered and color-coded.
Quad 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.
Illuminated on/off switch, 3-wire grounded cord and plug.
0.5A time delay fuse.
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 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 : Inclined eyepiece, 380mm (15 in.). Net wt. 6.5 kgs (14.2 lbs).
Vertical eyepiece, 455mm (18 in.).
PACKING
Head and frame in separate molded styrofoam container
with instruction brochure and vinyl dustcover.
Individual: Ship wt. 7.8 kgs (18 lbs), Dimensions 550x325x325mm (22x13x13
in.)
Master carton pack 1 each: Ship wt. 7.8 kgs (18 lbs), Dimensions 550x325x325mm
(22x13x13 in.)