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 Primarily, alignment telescopes (also called "line scopes" or
"line of sight" telescopes) are used to establish and maintain principal
optical reference lines. These reference lines may be used by other
instruments for a variety of alignment functions (ex., to turn right angles from
the reference line), or they may simply be used as measurement references
themselves (ex., bore straightness evaluation). In addition, many of them can generally provide the all-important functions of collimation,
autocollimation and autoreflection.
Almost all of our alignment telescopes are of the original Keuffel & Esser
(K+E) design. These instruments were manufactured and distributed by Cubic Precision before
that company joined Brunson Instrument in 1997.
At that time, we consolidated our alignment telescope products and adopted the K+E design as our primary
product offering.
Our alignment telescopes are made of a very heavy-walled, heat treated, special alloy
stainless steel tubing, and concentrically ground inside and out to extremely
fine tolerances. Optical systems are precisely installed, and the image is
especially bright and clear, having excellent definition. Like all of our
instruments, our alignment scopes have the unique ability to prove their
accuracy right on the job.
For a more in-depth look at optical tooling instruments,
principles, and applications, visit our Learning Center.
Barrel
All of our alignment telescope barrels meet A.I.A. specifications, and
are hardened and ground to assure good stability and accuracy. The outside diameter is
2.2494" to 2.2497" on all instruments except the 381 series, which has
a barrel diameter of 1.7494" to 1.7497".
Micrometers
Some alignment telescopes have built-in optical
micrometers, others don't. If the instrument has micrometers,
precise measurements of lateral displacement from the line of sight (both
horizontal and vertical) can be taken. Micrometers are mounted within the
barrel. Different models are available with varying resolutions,
ranges and measurement units (metric or English). See the
list of alignment telescopes for a summary of the various models.
Autoreflection Target
Many of our alignment telescopes have built-in
autoreflection targets on the objective (front) end. These
paired-line targets are concentric to the line of sight within
±0.001". Three spacings exist (0.008", 0.025", and
0.082") between the paired lines for use at all distances up to 100’.
(A 0.092" circle target is also included.) The target may be
illuminated from the rear by an autocollimation light source.
Bases
Since alignment telescopes have no way to fine-tune the direction of the line of
sight, a variety of bases are provided to
support and orient the barrel in any desired direction (including straight
down). Custom mounting hardware is also available on
request. Bases are not furnished with the instruments.
Lighting
Illumination is supplied by an LED lamp in order to decrease heat distortion
and virtually eliminate shock damage. Either 110 or 220VAC may be
used with our auto-sensing multi-voltage transformer. A DC power
supply is also included with instruments and accessories requiring
illumination.
Accessories
We also provide accessories which allow
angular measurement and right-angle sweeps.
Take
a look at all of our alignment telescopes...
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