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The model C47280 alignment telescope is extremely similar to the 71-2022, but
does not have the micrometers. This unique feature produces an economical line scope that
is compatible with the popular Brunson spherical mounting system. C47280 Specifications
- Overall length: 17 13/16 inches
- Ground barrel length: 10 inches.
- Magnification: Varies automatically from 4X at zero focus to
30X at infinity
- Field of View: 37 minutes at infinity, 42 mm at zero focus
- Image: Erect
- Optics: Fully coated optics used throughout
- Effective Aperture: 42 mm.
- Resolution: 3.4 arcseconds
- Reticle: All purpose, double glass, dustproof; cross pattern
with single lines top and right, paired lines bottom and left.
- Focusing Range: Zero to infinity
- Straightness of line of sight: From 0 - 60', 0.002 inch; from
60' - 100', 0.004 inch.
- Approximate Weight: Instrument, 11 pounds; instrument and
case, 24 pounds; shipping, 27 pounds
- Standard Accessories:
Instruction booklet, model 71-5511 autocollimation illumination unit, two spare
bulbs.
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As our most versatile alignment scope, the model 71-2022 incorporates
two micrometers for precise measurements in two directions perpendicular to the line of
sight. The telescope has built-in provisions for maintaining the line of sight straight
throughtout a focusing range from zero to infinity, allowing the instrument to be located
in the tightest of setups. Straightness of the line of sight is maintained at 0.002 inch
from zero to 60 feet and 0.004 inch from 60 feet to 100 feet. The model
71-2022 is also equipped for autocollimation and auto-reflection (using built-in
objective-end target). 71-2022
Specifications
- Overall length: 17 13/16 inches
- Ground barrel length: 9 3/16 inches
- Magnification: Varies automatically from 4X at zero focus to
46X at infinity
- Field of View: 37 minutes at infinity, 42 mm at zero focus
- Image: Erect
- Optics: Fully coated optics used throughout
- Effective Aperture: 42 mm.
- Resolution: 3.4 arcseconds
- Reticle: All purpose, double glass, dustproof; cross pattern
with single lines top and right, paired lines bottom and left.
- Focusing Range: Zero to infinity
- Micrometers: Built-in horizontal and vertical optical
micrometers: +/- 0.050 inch displacement. Direct reading to 0.001 inch.
Micrometer accuracy +/- 0.0002 over full range. Scale graduations are red and black
to indicate direction of displacement.
- Approximate Weight: Instrument, 11 1/2 pounds; instrument and
case, 24 pounds; shipping, 29 pounds
- Standard Accessories:
Instruction booklet, autocollimating light source (model 71-5511), and two spare bulbs.
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When
you need an alignment telescope with right-angle viewing capabilities, simply use the
model 71-2022 (above) along with the model 71-2230 right-angle eyepiece adapter.
This eyepiece swivels 360 degrees for ease of viewing from any angle. Optical
specifications for 71-2022 are the same with or without this special eyepiece. |
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| Whether it is employed in complex,
multi-instrument setups or simply holding a reference line, the 71-2062 is an economical
and reliable optical alignment instrument. This scope is well-suited to applications not
requiring micrometer measurements. 71-2062
Specifications
Telescope:
- Length: 13 1/4 inches
- Magnification: Varies automatically from 23X at 2 inches to
35X at infinity
- Field of View: 47 minutes at infinity; 7.4 mm at near distance
- Image: Erect
- Optics: Fully coated optics used throughout
- Effective Aperture: 38 mm.
- Resolution: 3.5 arcseconds
- Reticle: All purpose, double glass, dustproof; cross-pattern
with single lines top and right, paired lines bottom and left
- Focusing Range: 2 inches to infinity
- Focusing Knob: Located 6 1/2 inches from end of eyepiece
- Approximate Weight: Instrument, 5 lbs, 11 oz; instrument and
case, 17 lbs; shipping weight, 20 lbs.
- Standard Accessories:
Instruction booklet and model 71-5511 autocollimation illumination unit.
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| Functionally similar to the larger
model 71-2062, the 381's compact size results in affordability without compromising
accuracy. A different mounting base is required for the smaller barrel. Technical Information
Barrel
The 6.978-inch long barrel meets A.I.A. specifications, and is hardened and ground to
assure good stability and accuracy.
The outside diameter is 1.7494 to 1.7497 inches.
Auto-Reflection Target
This paired line target is concentric to the line of sight within ±0.001 of an inch.
Three spacings exist (0.012, 0.036 and 0.110 of an inch) between the paired lines for use
at all distances up to 100 feet. (A 0.092-inch radius circle target is also included.) The
target is illuminated from the rear by an auto-collimation light source.
Mounting
The model 381 may be set up using mounting base model 388, 88-6 or "vee" blocks.
Custom mounting hardware available by request. (Mounting not furnished with instrument.)
Lighting
Illumination is supplied by a low-voltage lamp to decrease heat distortion and shock
damage. A transformer and cord are supplied to step down 110 volt/60 Hz power.
Case
Hardwood case.
381 Specifications
Telescope:
- Length: 9 1/2 inches
- Magnification: 20X at 2 inches from objective; 30X at infinity
- Field of View: 1 degree
- Image: Erect
- Optics: Low reflective, protective coating
- Effective Aperture: 0.925 inch
- Resolution: 6.0 arcseconds
- Reticle: Glass, filar/bi-filar pattern (others available)
- Focusing Range: 2 inches to infinity
- Focusing Knob: Located 3 5/8 inches from objective end of
barrel
- Approximate Weight: Instrument, 8 pounds; shipping, 14 pounds
- Standard Accessories:
Instruction booklet and model 500 Light Source.
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51-3000 ALIGNMENT COLLIMATOR Used to establish positions in reference to a line of sight and for checking and
adjusting optical alignment instruments. The collimator barrel is machined from hardened
steel with a hard chrome surface. Barrel length is 12 inches, diameter is 2.2498 inches.
The infinity target is graduated every 30 seconds. |
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58-1890 MAGNETIC MIRROR A
mirror used to check the perpendicularity of any flat surface to a line of sight by means
of auto-reflection or auto-collimation. 2.5 inch diameter. 1/4 wave length in 50mm flat.
Single magnet parallel to within 3 arc seconds. |
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51-9030 OPTICAL SQUARE The optical square is mounted on an alignment telescope or an alignment
collimator with a diameter of 2.2498 inch. It is generally used to establish a plane
perpendicular to the telescope line of sight. 90 degrees to within one arc second. The
optical system is mounted in a spherical housing of 3.500 in diameter. |
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AUTO REFLECTION TARGETS 58-1800
Glass Target
58-1810 Mounted Target
58-1820 Small Glass Target
58-1830 Small Mounted Target
58-1840 Mirror Target
58-1850 Plastic Target
58-1860 Adhesive Target |
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51-9040 STRIDING LEVEL This level is used for establishing a level line of sight on any alignment
telescope or alignment collimator with a 2.25 inch diameter.
51-9045 COINCIDENCE STRIDING LEVEL
A Striding Level that uses a coincidence type level with
magnification permitting leveling to within 1 arc second. |
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51-9005 SPHERICAL ADAPTER This
adapter is a hardened steel sphere ground to 3.500 inch diameter. It has a collet for
clamping the adapter on any point along the barrel of a telescope, collimator, or tube
2.25 inch in diameter. |
