2024BL Alignment Telescope

Bright line & bright field reticles, metric micrometers

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2024BL Bright Line Alignment Telescope

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Like most of our alignment telescopes, the 2024BL uses the design of the 2022 as its basic building block.  However, the 2024BL has metric micrometers as well as a right angle eyepiece and a two-reticle system consisting of a dark field, bright line reticle as well as a bright field, dark line reticle.  These features specifically enhance the unit's accuracy and ease of use when autocollimating.  The 2024BL does not include a  built-in auto-reflection target as many of our other alignment telescopes do.  An autocollimation illumination unit (our model 508) is included with the instrument, operating at voltages from 110-220VAC.

See also similar instrument 2030 (with micrometers graduated in English units).

You can read more about our alignment telescopes on this website.

Specifications
Magnification:  Varies from 4x at zero focus to 46x at infinity.

Focusing range:  Zero to infinity.

Resolving power:  3.4 c/mm (according to NIST test procedure).

Field of view:  37 minutes at infinity, 42 mm at zero focus.

Effective aperture:  42 mm.

Optics:  Fully coated optics used throughout.

Reticle:  All-purpose, double glass, dustproof; cross-pattern with single lines top and right, paired lines bottom and left.

Eyepiece:  Fully erect image; diopter scale. Right-angle eyepiece and complete projection accessories available.

Focusing knob:  Drum graduated to show focusing distance in meters. 		Optical Micrometer:
  • Built-in horizontal and vertical optical micrometers.
  • Displacement: ± 1.2 mm, direct reading to 0.02 mm.
  • Accuracy: ±0.005 mm over full range.
  • Scale graduations are red and black to indicate direction of displacement.
Telescope barrel:  Made of through hardened stabilized stainless steel.

Barrel diameter:  57.14492 mm (+0, -0.0076 mm) or 2.2498" (+0", -0.0003") Meets A.I.A. specifications.

Barrel length:  23.3 cm.

Overall length:  45.1 cm.

Weight:  Approx. 5.23 kg.

May be used with...
  • 187-S Coincidence Striding Level
  • 2230  Right Angle Eyepiece (discontinued)
  • 2240  Combination Auto-Collimation, Projection, Right Angle eyepiece
  • 3205  Cross Level
  • 3220  Coincidence Striding Level (discontinued)
  • 6202  Magnetic Back Mirror, 2 1/2"
  • 6204  Magnetic Back Mirror, 4"
  • Our alignment telescope bases